Merge "allow carriers to dictate what codes are busy codes" into tm-qpr-dev am: 5d91b61ed5 am: f7f12f51c3

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

Change-Id: Id61c9cb7d424739c5ac8d20563987b29993a8bb6
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>