hal: Add support for PCM in offload path

- Translate PCM Offload format to pcm codec id
- Set 16/24 sub format id in compress params format
- Calculate offload fragment size for pcm
- Move offload calculation functions to platform file
- Update audio policy manager isOffloadSupported
  for pcm offload profile. Use audio.offload.pcm.enable

Change-Id: I2064d646b66e8283fce2cc736e96fb93cba0a552