ASoC: sdm660_cdc: Update micbias regulator to power saving on use basis

In internal codec, MICBIAS regulator uses LDO7B power rail.
Add changes to remove voting for voltage and current
when this regulator is not in use from audio to save power.

CRs-Fixed: 2033776
Change-Id: I3c7cea4afadd293a03787081895d451bcf7bea03
Signed-off-by: Laxminath Kasam <lkasam@codeaurora.org>