BT: add sysprop to enable OPUS codec am: 932c8178a7

Original change: https://googleplex-android-review.googlesource.com/c/device/google/raviole/+/20296724

Change-Id: I7470ddb427921b5919caf1bede25a58785a3108f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>