drm/nouveau: add delayed switch complete callback.

this just adds the callback on the delayed switch mechanism.
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/nouveau/nouveau_state.c

@@ -1054,6 +1054,7 @@ int nouveau_load(struct drm_device *dev, unsigned long flags)
 
 void nouveau_lastclose(struct drm_device *dev)
 {
+	vga_switcheroo_process_delayed_switch();
 }
 
 int nouveau_unload(struct drm_device *dev)