Hal: Initial commit for B-family targets

- Remove broadside dual-mic config specific
  code which is not supported anymore.
- change output device for voice calls.
  Voice calls should enable side tone,use voice
  handset device which enables side tone during
  voice calls.
- Add Fluence quad MIC support for voice calls
  in speaker mode.
- Correct the audio hal library name to reflect
  the target name.
- Compile the msm8974 platform code for all
  b-family targets.
- Fix the low latency number accordingly for
  msm8610 in platform code

Change-Id: I8f16ac8eef8ef4bec1295bf73208ebaf90303603