media: platform: xilinx: use for_each_endpoint_of_node()

We already have for_each_endpoint_of_node(), don't use
of_graph_get_next_endpoint() directly. Replace it.

Signed-off-by: Kuninori Morimoto <[e-mail]>
Reviewed-by: Laurent Pinchart <[e-mail]>
Signed-off-by: Hans Verkuil <[e-mail]>

drivers/media/platform/xilinx/xilinx-vipp.c

···
 	struct media_pad *sink_pad;
 	struct xvip_graph_entity *ent;
 	struct v4l2_fwnode_link link;
-	struct device_node *ep = NULL;
+	struct device_node *ep;
 	struct xvip_dma *dma;
 	int ret = 0;
 
 	dev_dbg(xdev->dev, "creating links for DMA engines\n");
 
-	while (1) {
-		/* Get the next endpoint and parse its link. */
-		ep = of_graph_get_next_endpoint(node, ep);
-		if (ep == NULL)
-			break;
-
+	for_each_endpoint_of_node(node, ep) {
 		dev_dbg(xdev->dev, "processing endpoint %pOF\n", ep);
 
 		ret = v4l2_fwnode_parse_link(of_fwnode_handle(ep), &link);