Merge "btif: introduce a error struct for btav" am: fd3f55b5

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



Change-Id: I2389b87b1204b42a3365f0735b446d152bc3a356
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>