cleanup audio config

- add "radio" to audio routing and remove
  all specialization for radio.
- make focus wait timeout overridable.
- fix wrong handling of VR context: CAR_AUDIO_USAGE should
  be used instead of CAR_AUDIO_TYPE to check internal usages
- send radio context to vehicle hal for radio: Do not
  delete radio context anymore. Also cleaned up some radio
  handling

bug: 27886033

Change-Id: Iae5148291a5d63c79bf49d3bbc5ee73055a20411
7 files changed