Merge "audio: Add IBluetooth core interface" am: 7d183a48c8 am: c7e8d35e67

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

Change-Id: I33b37300d434cf0b7a88e63ed05089c2bc1ddab8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>