PM / devfreq: Use device_match_of_node()

Replace the open-code with device_match_of_node().
Signed-off-by: ye xingchen <ye.xingchen@zte.com.cn>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>

drivers/devfreq/devfreq.c

@@ -1057,7 +1057,7 @@ struct devfreq *devfreq_get_devfreq_by_node(struct device_node *node)
 	mutex_lock(&devfreq_list_lock);
 	list_for_each_entry(devfreq, &devfreq_list, node) {
 		if (devfreq->dev.parent
-			&& devfreq->dev.parent->of_node == node) {
+			&& device_match_of_node(devfreq->dev.parent, node)) {
 			mutex_unlock(&devfreq_list_lock);
 			return devfreq;
 		}