Fix tuning race condition in broadcast radio VTS am: 9bf75a3334

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/3412401

Change-Id: I128fd2350efb0cfcfff8dd1ac16050f5ed1033d4
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>