ALSA: compress: Add DSD format support for ALSA

WCD934X audio codec supports playback of DSD (Direct
Stream Digital) format. Extend ALSA (Advanced Linux
Sound Architecture) compress to support DSD format.

CRs-Fixed: 1056422
Change-Id: Ifb06674c251335a1d8cec71931355dca4c0e012d
Signed-off-by: Preetam Singh Ranawat <apranawat@codeaurora.org>
Signed-off-by: Banajit Goswami <bgoswami@codeaurora.org>