- Added necessary file contexts and interfaces for supporting API access
  control in audio, config, data, platform, power, sensor, telephony and
  thermal subsytems in SDK.
- Added necessary rules for test and reference applications to access the
  APIs.

CRs-Fixed: 3147551

Change-Id: I3bf8e62a0d37af05e668988dd2a1ef96fee4b4a2