ASoC: codecs: wcd938x: add basic controls

This patch adds basic controls found in wcd938x codec.

Signed-off-by: Srinivas Kandagatla <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>

Author: Srinivas-Kandagatla