Merge "Notify link status changed on connected or disconnected only" into udc-dev am: 968ac705

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/opt/telephony/+/22920294



Change-Id: If3948e7e9c403a0fbbac775ed876420fdf7f948b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>