Add HFP to BluetoothAudioSession am: aa70c11126 am: 0bcade6107 am: d001c451ab

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2806338

Change-Id: If8427dea143b2cfcfa85d411c52a2b505b13193b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>