ASoC: msm: Add support for enabling HD Voice

BeAMR/WideVoice can be enabled by sending HD Voice
enable command to MVM on ADSP. Add routing controls
and implement functionality for enabling/disabling
HD Voice.

Change-Id: I82d7e31c271eb47f235c758588c81ebc2a6e96f8
Signed-off-by: Vicky Sehrawat <vickys@codeaurora.org>