ASoC: msm: qdsp6v2: Add hardware Mic Activity Detection support

The hardware MIC Activity Detection(MAD) is audio codec hardware's
feature that transmit microphone's signal to QDSP through slimbus.
This audio signal is used by QDSP for listen service.

Change-Id: I309e5e077dfb8944d87508f7ee0fcc0a3bc59ded
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
8 files changed