drm: remove legacy drm_connector_property fxns

Replace references to and remove the connector property fxns, which
have been superseded with the more general object property fxns:

  + drm_connector_attach_property -> drm_object_attach_property
  + drm_connector_property_set_value -> drm_object_property_set_value
  + drm_connector_property_get_value -> drm_object_property_get_value

Signed-off-by: Rob Clark <rob@ti.com>
diff --git a/drivers/gpu/drm/drm_sysfs.c b/drivers/gpu/drm/drm_sysfs.c
index 05cd8fe..0229665 100644
--- a/drivers/gpu/drm/drm_sysfs.c
+++ b/drivers/gpu/drm/drm_sysfs.c
@@ -182,7 +182,7 @@
 	uint64_t dpms_status;
 	int ret;
 
-	ret = drm_connector_property_get_value(connector,
+	ret = drm_object_property_get_value(&connector->base,
 					    dev->mode_config.dpms_property,
 					    &dpms_status);
 	if (ret)
@@ -277,7 +277,7 @@
 		return 0;
 	}
 
-	ret = drm_connector_property_get_value(connector, prop, &subconnector);
+	ret = drm_object_property_get_value(&connector->base, prop, &subconnector);
 	if (ret)
 		return 0;
 
@@ -318,7 +318,7 @@
 		return 0;
 	}
 
-	ret = drm_connector_property_get_value(connector, prop, &subconnector);
+	ret = drm_object_property_get_value(&connector->base, prop, &subconnector);
 	if (ret)
 		return 0;