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>
2 files changed