Merge "Add a doc about ABL requirements" into main am: 3004a914a9

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/2972975

Change-Id: I6673cbaeb852e15306f2ac58676f9ac38b4d821f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>