[virtio] Mark virtio_drivers::Hal implementation as unsafe am: 9f37a45485

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/23110876

Change-Id: I8aaeef9d385a64c9f00511d12611a978760e045a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>