Merge "Initialize RadioProxy only once" into tm-dev am: 18289495 am: 991bc49d

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



Change-Id: I5435b63d7fd06fa9e328ed79032271b8eb209d5e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>