hal: Change volume control for HFP in Dual ASM loopback am: 26ae13f96f am: 812d40c590 am: 33b7a8aef1
am: 33eb814ba7  -s ours

Change-Id: Ia2e1322dce206f9734f90cf40906ed7ab944294e
tree: 1fc5ef50003f20075a5010d8fc31c3d66f718879
  1. hal/
  2. legacy/
  3. post_proc/
  4. visualizer/
  5. voice_processing/
  6. Android.mk