virtio-gpu-pci: tag as not hotpluggable

We can't hotplug display adapters in qemu, tag virtio-gpu-pci
accordingly (virtio-vga already has this).
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
Acked-by: NMichael S. Tsirkin <mst@redhat.com>
Message-id: 1473319037-27645-1-git-send-email-kraxel@redhat.com

hw/display/virtio-gpu-pci.c

@@ -48,6 +48,7 @@ static void virtio_gpu_pci_class_init(ObjectClass *klass, void *data)
 
     set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories);
     dc->props = virtio_gpu_pci_properties;
+    dc->hotpluggable = false;
     k->realize = virtio_gpu_pci_realize;
     pcidev_k->class_id = PCI_CLASS_DISPLAY_OTHER;
 }