drm/kms: make fb helper work for all drivers.

This initialises the fb helper with the connector helper,
so that the fb cmdline code works for intel as well.

Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/include/drm/drm_crtc_helper.h b/include/drm/drm_crtc_helper.h
index 4c8daca..ef47dfd 100644
--- a/include/drm/drm_crtc_helper.h
+++ b/include/drm/drm_crtc_helper.h
@@ -39,6 +39,7 @@
 
 #include <linux/fb.h>
 
+#include "drm_fb_helper.h"
 struct drm_crtc_helper_funcs {
 	/*
 	 * Control power levels on the CRTC.  If the mode passed in is
@@ -119,10 +120,11 @@
 	encoder->helper_private = (void *)funcs;
 }
 
-static inline void drm_connector_helper_add(struct drm_connector *connector,
+static inline int drm_connector_helper_add(struct drm_connector *connector,
 					    const struct drm_connector_helper_funcs *funcs)
 {
 	connector->helper_private = (void *)funcs;
+	return drm_fb_helper_add_connector(connector);
 }
 
 extern int drm_helper_resume_force_mode(struct drm_device *dev);