Fix tuning race condition in broadcast radio VTS am: c60c4658c3 am: 1772d1b008

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/3417146

Change-Id: I6ebf6996ef933a77ab0be72ac55503c401906c64
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>