drm/virtio: Add */ in block comments to separate line

This patch fixes the checkpatch.pl warning:

virtgpu_ioctl.c:551: WARNING: Block comments use a trailing */ on a
separate line
...
Signed-off-by: NRodrigo Siqueira <rodrigosiqueiramelo@gmail.com>
Reviewed-by: NGurchetan Singh <gurchetansingh@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/f0bd4104a7d26bf7561c3a2b4632041c5411f1f2.1519343668.git.rodrigosiqueiramelo@gmail.comSigned-off-by: NGerd Hoffmann <kraxel@redhat.com>

drivers/gpu/drm/virtio/virtgpu_ioctl.c

@@ -550,7 +550,8 @@ struct drm_ioctl_desc virtio_gpu_ioctls[DRM_VIRTIO_NUM_IOCTLS] = {
 			  DRM_AUTH|DRM_UNLOCKED|DRM_RENDER_ALLOW),
 
 	/* make transfer async to the main ring? - no sure, can we
-	   thread these in the underlying GL */
+	 * thread these in the underlying GL
+	 */
 	DRM_IOCTL_DEF_DRV(VIRTGPU_TRANSFER_FROM_HOST,
 			  virtio_gpu_transfer_from_host_ioctl,
 			  DRM_AUTH|DRM_UNLOCKED|DRM_RENDER_ALLOW),

drivers/gpu/drm/virtio/virtgpu_prime.c

@@ -25,7 +25,8 @@
 #include "virtgpu_drv.h"
 
 /* Empty Implementations as there should not be any other driver for a virtual
- * device that might share buffers with virtgpu */
+ * device that might share buffers with virtgpu
+ */
 
 int virtgpu_gem_prime_pin(struct drm_gem_object *obj)
 {

drivers/gpu/drm/virtio/virtgpu_vq.c

@@ -383,7 +383,8 @@ static int virtio_gpu_queue_cursor(struct virtio_gpu_device *vgdev,
 }
 
 /* just create gem objects for userspace and long lived objects,
-   just use dma_alloced pages for the queue objects? */
+ * just use dma_alloced pages for the queue objects?
+ */
 
 /* create a basic resource */
 void virtio_gpu_cmd_create_resource(struct virtio_gpu_device *vgdev,