ASoC: msm8974: Compressed platform driver changes for playback and capture

Implement drain command in compress platform driver. Currently,
at the end of compress audio playback, session is terminated
 without ensuring compressed audio stream is completely rendered.
Use ioctl drain to drain out all the data before EOS is signalled
and session is closed. This is to make sure all the data is played
out by DSP.

Increase the number of periods and decrease the period size. Add support
for compressed TX and timestamp update.

Change-Id: Icffb20312d1bd2d2f4f4ac9421c34685fbc7cb80
Signed-off-by: Phani Kumar Uppalapati <phanik@codeaurora.org>