radv: Actually check for vm faults.

radv: Actually check for vm faults.

The code can check for vm faults having happened. If we only do it
on a hang we don't know when the faults happened. This changes the
behavior to when the first VM faults is found, even without a hang.

Reviewed-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>