ASoC: msm: Add AAC support for compressed audio

Add support for playback of aac clips through
compressed audio driver.

Change-Id: I234a94d291de200eefafea383be5d845c0eaa4b7
Signed-off-by: Krishnankutty Kolathappilly <kkolat@codeaurora.org>

Conflicts:

	sound/soc/msm/msm-compr-q6.c