[automerger skipped] Merge "DO NOT MERGE Adding package caller to prepareForUnattendedReboot." am: bd68381162 -s ours

am skip reason: subject contains skip directive

Original change: https://android-review.googlesource.com/c/platform/packages/services/Telephony/+/1813538

Change-Id: I27e7e657c2fcc362d5d00d8a34459730df217421