Merge "Improve docs for SCHEDULE_EXACT_ALARM" into tm-dev am: 8dabf5ec am:...

Merge "Improve docs for SCHEDULE_EXACT_ALARM" into tm-dev am: 8dabf5ec am: 38a7612c am: 32bc5729

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18500505



Change-Id: I83b719c4ccdcab113941bfe9ffacae9c955d27df
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>