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

 drivers/net/wireless/intel/iwlegacy/3945-mac.c:821: warning: Function parameter or member 'il' not described in 'il3945_setup_handlers'
 drivers/net/wireless/intel/iwlegacy/3945-mac.c:915: warning: Function parameter or member 'il' not described in 'il3945_dma_addr2rbd_ptr'
 drivers/net/wireless/intel/iwlegacy/3945-mac.c:915: warning: Function parameter or member 'dma_addr' not described in 'il3945_dma_addr2rbd_ptr'
 drivers/net/wireless/intel/iwlegacy/3945-mac.c:932: warning: Function parameter or member 'il' not described in 'il3945_rx_queue_restock'
 drivers/net/wireless/intel/iwlegacy/3945-mac.c:979: warning: Function parameter or member 'il' not described in 'il3945_rx_allocate'
 drivers/net/wireless/intel/iwlegacy/3945-mac.c:979: warning: Function parameter or member 'priority' not described in 'il3945_rx_allocate'
 drivers/net/wireless/intel/iwlegacy/3945-mac.c:1179: warning: Function parameter or member 'il' not described in 'il3945_rx_handle'
 drivers/net/wireless/intel/iwlegacy/3945-mac.c:1663: warning: Function parameter or member 'il' not described in 'il3945_verify_inst_full'
 drivers/net/wireless/intel/iwlegacy/3945-mac.c:1663: warning: Function parameter or member 'image' not described in 'il3945_verify_inst_full'
 drivers/net/wireless/intel/iwlegacy/3945-mac.c:1663: warning: Function parameter or member 'len' not described in 'il3945_verify_inst_full'
 drivers/net/wireless/intel/iwlegacy/3945-mac.c:1703: warning: Function parameter or member 'il' not described in 'il3945_verify_inst_sparse'
 drivers/net/wireless/intel/iwlegacy/3945-mac.c:1703: warning: Function parameter or member 'image' not described in 'il3945_verify_inst_sparse'
 drivers/net/wireless/intel/iwlegacy/3945-mac.c:1703: warning: Function parameter or member 'len' not described in 'il3945_verify_inst_sparse'
 drivers/net/wireless/intel/iwlegacy/3945-mac.c:1739: warning: Function parameter or member 'il' not described in 'il3945_verify_ucode'
 drivers/net/wireless/intel/iwlegacy/3945-mac.c:1821: warning: Function parameter or member 'il' not described in 'il3945_read_ucode'
 drivers/net/wireless/intel/iwlegacy/3945-mac.c:2061: warning: Function parameter or member 'il' not described in 'il3945_set_ucode_ptrs'
 drivers/net/wireless/intel/iwlegacy/3945-mac.c:2093: warning: Function parameter or member 'il' not described in 'il3945_init_alive_start'
 drivers/net/wireless/intel/iwlegacy/3945-mac.c:2135: warning: Function parameter or member 'il' not described in 'il3945_alive_start'

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/20200826093401.1458456-4-lee.jones@linaro.org