This is yet another simple but odd driver for the audio block of the g12a
and sm1 SoC families.

For TDMOUT's sclk to be properly inverted, bit 29 of
AUDIO_CLK_TDMOUT_x_CTRL should be the inverse of bit 28.
IOW bit28 == !bit29 at all times

This setting is automatically applied on axg and the manual setting was
added on g12a.

Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Link: https://lore.kernel.org/r/20200729154359.1983085-2-jbrunet@baylibre.com