Satellite demo mode : Simulated sending and receiving am: b6c01756 am: 3978c467 am: 49ebb057

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/opt/telephony/+/22840005



Change-Id: If7e5cccf6c4e82b402c562a4e28bfb40d51d8934
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>