Fixes the following W=1 kernel build warning(s):

 drivers/net/wireless/intel/iwlegacy/3945.c:104: warning: Function parameter or member 'il' not described in 'il3945_disable_events'
 drivers/net/wireless/intel/iwlegacy/3945.c:273: warning: Function parameter or member 'il' not described in 'il3945_tx_queue_reclaim'
 drivers/net/wireless/intel/iwlegacy/3945.c:273: warning: Function parameter or member 'txq_id' not described in 'il3945_tx_queue_reclaim'
 drivers/net/wireless/intel/iwlegacy/3945.c:273: warning: Function parameter or member 'idx' not described in 'il3945_tx_queue_reclaim'
 drivers/net/wireless/intel/iwlegacy/3945.c:299: warning: Function parameter or member 'il' not described in 'il3945_hdl_tx'
 drivers/net/wireless/intel/iwlegacy/3945.c:299: warning: Function parameter or member 'rxb' not described in 'il3945_hdl_tx'
 drivers/net/wireless/intel/iwlegacy/3945.c:637: warning: Function parameter or member 'il' not described in 'il3945_hw_txq_free_tfd'
 drivers/net/wireless/intel/iwlegacy/3945.c:637: warning: Function parameter or member 'txq' not described in 'il3945_hw_txq_free_tfd'
 drivers/net/wireless/intel/iwlegacy/3945.c:686: warning: Function parameter or member 'il' not described in 'il3945_hw_build_tx_cmd_rate'
 drivers/net/wireless/intel/iwlegacy/3945.c:686: warning: Function parameter or member 'cmd' not described in 'il3945_hw_build_tx_cmd_rate'
 drivers/net/wireless/intel/iwlegacy/3945.c:686: warning: Function parameter or member 'info' not described in 'il3945_hw_build_tx_cmd_rate'
 drivers/net/wireless/intel/iwlegacy/3945.c:686: warning: Function parameter or member 'hdr' not described in 'il3945_hw_build_tx_cmd_rate'
 drivers/net/wireless/intel/iwlegacy/3945.c:686: warning: Function parameter or member 'sta_id' not described in 'il3945_hw_build_tx_cmd_rate'
 drivers/net/wireless/intel/iwlegacy/3945.c:838: warning: Function parameter or member 'il' not described in 'il3945_txq_ctx_reset'
 drivers/net/wireless/intel/iwlegacy/3945.c:1003: warning: Function parameter or member 'il' not described in 'il3945_hw_txq_ctx_free'
 drivers/net/wireless/intel/iwlegacy/3945.c:1044: warning: Function parameter or member 'new_reading' not described in 'il3945_hw_reg_adjust_power_by_temp'
 drivers/net/wireless/intel/iwlegacy/3945.c:1044: warning: Function parameter or member 'old_reading' not described in 'il3945_hw_reg_adjust_power_by_temp'
 drivers/net/wireless/intel/iwlegacy/3945.c:1053: warning: Function parameter or member 'temperature' not described in 'il3945_hw_reg_temp_out_of_range'
 drivers/net/wireless/intel/iwlegacy/3945.c:1069: warning: Function parameter or member 'il' not described in 'il3945_hw_reg_txpower_get_temperature'
 drivers/net/wireless/intel/iwlegacy/3945.c:1107: warning: Function parameter or member 'il' not described in 'il3945_is_temp_calib_needed'
 drivers/net/wireless/intel/iwlegacy/3945.c:1328: warning: Function parameter or member 'il' not described in 'il3945_hw_reg_set_scan_power'
 drivers/net/wireless/intel/iwlegacy/3945.c:1328: warning: Function parameter or member 'scan_tbl_idx' not described in 'il3945_hw_reg_set_scan_power'
 drivers/net/wireless/intel/iwlegacy/3945.c:1328: warning: Function parameter or member 'rate_idx' not described in 'il3945_hw_reg_set_scan_power'
 drivers/net/wireless/intel/iwlegacy/3945.c:1328: warning: Function parameter or member 'clip_pwrs' not described in 'il3945_hw_reg_set_scan_power'
 drivers/net/wireless/intel/iwlegacy/3945.c:1328: warning: Function parameter or member 'ch_info' not described in 'il3945_hw_reg_set_scan_power'
 drivers/net/wireless/intel/iwlegacy/3945.c:1328: warning: Function parameter or member 'band_idx' not described in 'il3945_hw_reg_set_scan_power'
 drivers/net/wireless/intel/iwlegacy/3945.c:1383: warning: Function parameter or member 'il' not described in 'il3945_send_tx_power'
 drivers/net/wireless/intel/iwlegacy/3945.c:1460: warning: Function parameter or member 'il' not described in 'il3945_hw_reg_set_new_power'
 drivers/net/wireless/intel/iwlegacy/3945.c:1522: warning: Function parameter or member 'ch_info' not described in 'il3945_hw_reg_get_ch_txpower_limit'
 drivers/net/wireless/intel/iwlegacy/3945.c:1552: warning: Function parameter or member 'il' not described in 'il3945_hw_reg_comp_txpower_temp'
 drivers/net/wireless/intel/iwlegacy/3945.c:1712: warning: Function parameter or member 'il' not described in 'il3945_commit_rxon'
 drivers/net/wireless/intel/iwlegacy/3945.c:1845: warning: Function parameter or member 'il' not described in 'il3945_reg_txpower_periodic'
 drivers/net/wireless/intel/iwlegacy/3945.c:1889: warning: Function parameter or member 'il' not described in 'il3945_hw_reg_get_ch_grp_idx'
 drivers/net/wireless/intel/iwlegacy/3945.c:1889: warning: Function parameter or member 'ch_info' not described in 'il3945_hw_reg_get_ch_grp_idx'
 drivers/net/wireless/intel/iwlegacy/3945.c:1924: warning: Function parameter or member 'il' not described in 'il3945_hw_reg_get_matched_power_idx'
 drivers/net/wireless/intel/iwlegacy/3945.c:1924: warning: Function parameter or member 'requested_power' not described in 'il3945_hw_reg_get_matched_power_idx'
 drivers/net/wireless/intel/iwlegacy/3945.c:1924: warning: Function parameter or member 'setting_idx' not described in 'il3945_hw_reg_get_matched_power_idx'
 drivers/net/wireless/intel/iwlegacy/3945.c:1924: warning: Function parameter or member 'new_idx' not described in 'il3945_hw_reg_get_matched_power_idx'
 drivers/net/wireless/intel/iwlegacy/3945.c:2055: warning: Function parameter or member 'il' not described in 'il3945_txpower_set_from_eeprom'
 drivers/net/wireless/intel/iwlegacy/3945.c:2313: warning: Function parameter or member 'il' not described in 'il3945_init_hw_rate_table'

Cc: Stanislaw Gruszka <stf_xl@wp.pl>
Cc: Kalle Valo <kvalo@codeaurora.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Linux Wireless <ilw@linux.intel.com>
Cc: linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200826093401.1458456-6-lee.jones@linaro.org