Merge "audio: Add IBluetooth core interface" am: 7d183a48c8 am: c7e8d35e67 am: 88db62cd69

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

Change-Id: I1d207b79bcb4e97a46b41f35c8149a3e58f27cb0
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>