Merge "audio: Add IBluetooth core interface" am: 7d183a48c8

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2239861

Change-Id: Ib83232899075b03f32767f7cc8f4b74c22e78f9a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>