Merge "docs: Add device_trees.md" into main am: 2c07319d9e

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/3116625

Change-Id: I09543158f4e77d103046384f5cd32124cc2cb503
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>