sepolicy for crosvm to support virtiofs am: c7426d2e1d

Original change: https://android-review.googlesource.com/c/platform/system/sepolicy/+/3343505

Change-Id: Ie0e7af43036819c9aa21391200846a04b99a12ee
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>