Wait for SCO connected signal to ring when BT is connected am: c8f6d3f2 am: 2d6380b9

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/services/Telecomm/+/23794937



Change-Id: I45f4a63a862c90eb7d26312252347cb5190158d3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>