ASoC: msm: Add support for AC3 and EC3 playback in tunnel mode

Dolby surround1-DS1 module supports both Dolby Audio processing - post
processing and Dolby digital plus decoder in DSP. Add support for
AC3 and EC3 playback in tunnel mode so that DS1 is integrated and
functional end to end.

Change-Id: Iacb46cdfded16c9a5a9227a6ff4e072c61df2be8
Signed-off-by: Subhash Chandra Bose Naripeddy <snariped@codeaurora.org>