Satellite demo mode : Simulated sending and receiving am: b6c01756 am: 3978c467 am: 4ad1e453

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



Change-Id: I13fd0f6634534e15523cfeecff6d6c7fb1ccce99
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>