ASoC: wcd934x: add wcd934x audio codec driver

Add changes to support wcd934x audio codec.
This driver registers to ALSA framework, supports
basic codec operations like playback and record.

CRs-Fixed: 1041199
Change-Id: I62c53d98b6cd8e750a040f692b164b9bfcf44799
Signed-off-by: Vidyakumar Athota <vathota@codeaurora.org>
Signed-off-by: Yeleswarapu Nagaradhesh <nagaradh@codeaurora.org>