Initial changes to bring-up audio on automotive
platform, which include:
1. Add automotive snd card support in hw info.
2. Rename mixer_paths for automotive adp and custom
snd card variant support.
3. Makefile update to load ADP acdb files for calibration.
4. Audio platform info override for acdb_id, pcm_id and
backend selection.
Change-Id: I6e27bb7172d5393f12bb390dae99640be131299d