drm/nouveau: add dumb ioctl support

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.c b/drivers/gpu/drm/nouveau/nouveau_drv.c
index 9f7bb12..9791d13 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drv.c
+++ b/drivers/gpu/drm/nouveau/nouveau_drv.c
@@ -433,6 +433,10 @@
 	.gem_open_object = nouveau_gem_object_open,
 	.gem_close_object = nouveau_gem_object_close,
 
+	.dumb_create = nouveau_display_dumb_create,
+	.dumb_map_offset = nouveau_display_dumb_map_offset,
+	.dumb_destroy = nouveau_display_dumb_destroy,
+
 	.name = DRIVER_NAME,
 	.desc = DRIVER_DESC,
 #ifdef GIT_REVISION