Merge "btif: introduce a error struct for btav" am: fd3f55b5 am: 6e0c112e am: 7de337c2

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/2218995



Change-Id: I6bd0802eadc37537affc38c8cec9b13e59f8f1c7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>