ASoC: test-component: use new of_graph functions

Current test-component.c is using for_each_endpoint_of_node()
for parsing "port", because there was no "port" base loop before.
It has been assuming 1 port has 1 endpoint here.

But now we can use "port" base loop (= for_each_of_graph_port()).
Let's replace for_each function from "endpoint" base to "port" base.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/87h692b5sw.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>

sound/soc/generic/test-component.c

@@ -521,7 +521,6 @@ static int test_driver_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct device_node *node = dev->of_node;
-	struct device_node *ep;
 	const struct test_adata *adata = of_device_get_match_data(&pdev->dev);
 	struct snd_soc_component_driver *cdriv;
 	struct snd_soc_dai_driver *ddriv;
@@ -591,7 +590,7 @@ static int test_driver_probe(struct platform_device *pdev)
 	}
 
 	i = 0;
-	for_each_endpoint_of_node(node, ep) {
+	for_each_of_graph_port(node, port) {
 		snprintf(dname[i].name, TEST_NAME_LEN, "%s.%d", node->name, i);
 		ddriv[i].name = dname[i].name;