Merge "pvmfw: Document needing to report the reboot reason" am: 02bc050d2b

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/2327653

Change-Id: I1c9ae67fbfe304483fa1f8d06eb2e425fb108b8e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>