vmbase: Move stack to end of writable_data am: 150ebc904e

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/23107368

Change-Id: I1148412c055b44f2e4fc10f432874739cef92ac6
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>