audiopolicy: support extended feature in audiopolicymanager.

- Add support for extended audio features including:
  COMPRESS_VOIP, EXTN_FORMATS, FM, HDMI_SPK, PCM_OFFLOAD,
  PROXY_DEVICE, SSR, DOLBY_UDC, DOLBY_DAP, and DOLBY_DDP.
- Migrate existing fixes in legacy AudioPolicyMangerBase.cpp and
  policy_hal/AudioPolicyManager.

Conflicts:
services/audiopolicy/AudioPolicyManager.cpp
Change-Id: I1925339b591cd29f11a71c287a2e53c0627e9e62