Merge "Add function for getting LE Audio Broadcast device set" am: a2557b1d am: 532404d6

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/2428892



Change-Id: Ifee2760d712390b76bac04c66d9cb73969708b67
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>