ASoC: 9615: Add in-call playback and in-call recording support

Add backend DAIs in machine driver to add support
for in-call playback and in-call recording.
Add voice playback tx BE, record tx BE, and record rx BE.

CRs-Fixed: 411475, 411476
Change-Id: If9f0b288b0e865aa6abdca15eb5ff10a749914d2
Signed-off-by: Prashanth Reddy <pgreddy@codeaurora.org>
1 file changed