We don't currently support the MemoryRegionIOMMUOps notifier, so throw
an error should a device require it.
Reviewed-by: Marcel Apfelbaum <marcel@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Reviewed-by: Peter Xu <peterx@redhat.com> Tested-by: Peter Xu <peterx@redhat.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>