fixes for ambien display

Change-Id: I4716babf5b53b5e4c2cfae2c488e96fcdf37d95f
Signed-off-by: klozz <xxx.reptar.rawrr.xxx@gmail.com>
audio: update audio_policy.conf for usb audio

- support dynamic sampling_rates, channel_masks,
  and formats for usb output profile
- add usb input profile

Change-Id: I3d38a76eba8838efe169d7ebb1a0f77104c807ce
Signed-off-by: klozz <xxx.reptar.rawrr.xxx@gmail.com>