Merge "allow carriers to dictate what codes are busy codes" into tm-qpr-dev am: 5d91b61ed5

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/services/Telephony/+/18641090

Change-Id: I70ff7b5bc3e34b35d0758c4db9ad65e94c4ee3f4
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>