ASoC: rt712-sdca: Add RT712 SDCA driver for Mic topology

This is the initial codec driver for rt712 SDCA (Mic topology).
The host should connect with rt712 SdW2 interface.

Signed-off-by: Shuming Fan <shumingf@realtek.com>
Link: https://lore.kernel.org/r/20230406085535.52002-1-shumingf@realtek.com


Signed-off-by: Mark Brown <broonie@kernel.org>