msm: Add 16 bit PCM as default format for  backend

Add 16 bit PCM as default format for backend. This sets
backend tx format to be 16 bit pcm in case of tunnel mode playback

CRs-Fixed: 593469
Change-Id: Ie686a8e7d2c496f67bbf2a29ba2640037f95e08f
Signed-off-by: Yeleswarapu, Nagaradhesh <nagaradh@codeaurora.org>
ASoC: msm: Check stream id for ASM callbacks in compress driver

Send stream id to DSP for asm commands which requires stream and
session information. Stream and session id is added as token
parameter for DSP commands. Use token parameter to interpret the
stream for which the callback is received.

Conflicts:

	sound/soc/msm/qdsp6v2/msm-compress-q6-v2.c

Change-Id: I58a40d84f60f4a4172ec7ee79302c8bfb24c910b
Signed-off-by: Krishnankutty Kolathappilly <kkolat@codeaurora.org>