Merge "le_audio: Implement voice back channel support" into tm-dev am: 36fb8ceb

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/18351776



Change-Id: Ie5c81cd38e61ff550e01d6e19ed3799d0e99c062
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>