drm: atmel-hlcdc: add missing .set_property helper to the crtc

The default implementation should be used.
Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1498107791-17450-2-git-send-email-peda@axentia.se

drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c

@@ -429,6 +429,7 @@ static const struct drm_crtc_funcs atmel_hlcdc_crtc_funcs = {
 	.atomic_destroy_state = atmel_hlcdc_crtc_destroy_state,
 	.enable_vblank = atmel_hlcdc_crtc_enable_vblank,
 	.disable_vblank = atmel_hlcdc_crtc_disable_vblank,
+	.set_property = drm_atomic_helper_crtc_set_property,
 };
 
 int atmel_hlcdc_crtc_create(struct drm_device *dev)