Merge "Basic support for device to device communication." am: 280bc375f3 am: 68032542c9

Original change: https://android-review.googlesource.com/c/platform/packages/services/Telephony/+/1548883

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I85ccd6fee779b1cee0c8bb54f7aabbaf4001e7cc