Add HFP to BluetoothAudioSession am: aa70c11126 am: 0bcade6107

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

Change-Id: Ic228aeb47d5597b5d9c0819f45609e0dd9f35e23
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>