Move Bluetooth HAL policy to hal_bluetooth

This moves bluetooth domain policy to do with Bluetooth HAL running
inside that domain into hal_bluetooth. bluetooth domain is now
associated with hal_bluetooth when Bluetooth HAL is in passthrough
mode.

Test: Toggle Bluetooth off and on
Test: Pair with another Android, and transfer a file to that Android
      over Bluetooth
Test: Pair with a Bluetooth speaker, play music through that speaker
      over Bluetooth
Bug: 34170079

Change-Id: Ibfff5d4d6e86f085cf3323282768ebc5de2c1baa
2 files changed