Handle f2fs/ext4 the correct way for lollipop [2/2]

Change-Id: Ifc57d8c7394be9d8ac7d03f919b44a4f49dff843
Signed-off-by: klozz <xxx.reptar.rawrr.xxx@gmail.com>
 audio: fix audio recording failure

- AudioPolicyManager picks up 5.1 channel mask which
  is the last entry of input profile channel masks.
  However, 5.1 surround sound recording is supported
  only when corresponding system property is set.
- Fix this issue by setting AUDIO_CHANNEL_IN_FRONT_BACK
  as the last entry of the input profile which is supported
  by default.

Change-Id: I09af4d024eaa4941ecdee21395b817263c0ae5a6
Signed-off-by: klozz <xxx.reptar.rawrr.xxx@gmail.com>
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>