audio: add new enums for 7.1 HAL

Add the following enums to 7.1 audio HAL:
- Spatial audio:
   spatializer output flag
   front wide channel masks

- Bluetooth LE
 broadcast audio device

Bug: 187446271
Test: m android.hardware.audio.common@7.1-enums
Change-Id: I9bfb937ece3a07a7844877de5f355ece1141f92d