N7100:
This is a combination of 3 commits.

audio: fix noise supression and update mixer ctls

Change-Id: I5b76be2d7d5d9754974295fce81b26498ccee391

audio: make builtin mic and back mic volumes consistent

Change-Id: I25cab57acb84a14200006e832a43676ff3c8b9d0

audio: set noise suppression based on audio parameter

Change-Id: Ie28205afda03280d9cc6437a7c98f7b995fd4f50

Conflicts:
	audio/audio_hw.h
	configs/tiny_hw.xml