audio hal: add support for USB_HEADSET device

Add support for USB_HEADSET device in device selection logic where
only USB_DEVICE was supported so far.

Bug: 36220140
Test: check music/video playback, voice/VoIP calls, OK google and
Camcorder with and without USB headset

Change-Id: Ia1a241b9a9cdec6c48c0596a057fabac30b1b16f
2 files changed
tree: 735e6866df1be7b6faee476f866ea9a7aec0c9d2
  1. hal/
  2. legacy/
  3. post_proc/
  4. visualizer/
  5. voice_processing/
  6. Android.mk