virtio: fix error message for number of queues

There's no such thing as "PCI queues" in the virtio core.
Signed-off-by: NCornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: NMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

hw/virtio/virtio.c

@@ -1380,7 +1380,7 @@ int virtio_load(VirtIODevice *vdev, QEMUFile *f, int version_id)
     num = qemu_get_be32(f);
 
     if (num > VIRTIO_QUEUE_MAX) {
-        error_report("Invalid number of PCI queues: 0x%x", num);
+        error_report("Invalid number of virtqueues: 0x%x", num);
         return -1;
     }