hal: enable setting gain in case of combo device

In case when speaker-headset combo device is selected, speaker
gain can be set seperatly.

Bug: 22672929
Change-Id: I06c1073b1a6ce238d6f824c6b9a8269e0fc465ab
4 files changed
tree: 256f356ae2b8639dba7786e108c230e884829a9c
  1. hal/
  2. legacy/
  3. post_proc/
  4. visualizer/
  5. voice_processing/
  6. Android.mk