[hypervisor] Add mmio_guard_init() to Hypervisor trait am: 90e6f16ad6

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/2540112

Change-Id: I9dec9f7be4847f40b14bbe5bf5d231b18ae0af2c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>