drm: add register and unregister functions for connectors

Introduce generic functions to register and unregister connectors. This
provides a common place to add and remove associated user space
interfaces.

Signed-off-by: Thomas Wood <thomas.wood@intel.com>
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/tegra/output.c b/drivers/gpu/drm/tegra/output.c
index a3e4f1e..446837e 100644
--- a/drivers/gpu/drm/tegra/output.c
+++ b/drivers/gpu/drm/tegra/output.c
@@ -105,7 +105,7 @@
 
 static void tegra_connector_destroy(struct drm_connector *connector)
 {
-	drm_sysfs_connector_remove(connector);
+	drm_connector_unregister(connector);
 	drm_connector_cleanup(connector);
 	drm_connector_clear(connector);
 }
@@ -318,7 +318,7 @@
 	drm_encoder_helper_add(&output->encoder, &encoder_helper_funcs);
 
 	drm_mode_connector_attach_encoder(&output->connector, &output->encoder);
-	drm_sysfs_connector_add(&output->connector);
+	drm_connector_register(&output->connector);
 
 	output->encoder.possible_crtcs = 0x3;