Merge "Initialize RadioProxy only once" into tm-dev am: 18289495 am: a116ecf9

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/opt/telephony/+/18486462



Change-Id: I308c957b898a569aca30dcfd93657de58bc3c9ff
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>