audio: add support for FM feature

- Enable FM flags in audio HAL
- Use new FM device enums from system/core
- Fix device_conv_table for new device and legacy
  device mapping
- Update AudioPolicyManagerALSA to support FM

Change-Id: I11d72035f0f52dd69eafe0a2a081cfc3b9ab26c5
7 files changed
tree: 9c5a7bb47cbdab00e155dcf69c96867e8aab83e4
  1. alsa_sound/
  2. libalsa-intf/
  3. mm-audio/
  4. Android.mk