ASoC: msm: Add volume support for compressed and pcm driver

Add support for controlling pcm and compressed audio
volume from DSP. Add TLV mixer control to set the pcm
and compressed audio stream volume. Enable soft volume
and soft pause features in pcm and compressed driver.

Change-Id: Ifea8faca39a92127fa91e880b904c0e60c92f9d0
Signed-off-by: Krishnankutty Kolathappilly <kkolat@codeaurora.org>
4 files changed