Merge "dumpstate: notes on usage" into main am: cbd1764034 am: 77f0c5506d

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/3446594

Change-Id: I64d356bbfc983ec1ac2cbf93bb01f6a62637bfad
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>