ASoC: cs35l34: Convert to RUNTIME_PM_OPS()

Use the newer RUNTIME_PM_OPS() macro instead of SET_RUNTIME_PM_OPS()
together with pm_ptr(), which allows us dropping ugly __maybe_unused
attributes.

This optimizes slightly when CONFIG_PM is disabled, too.

Cc: [e-mail]
Reviewed-by: Charles Keepax <[e-mail]>
Signed-off-by: Takashi Iwai <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Mark Brown <[e-mail]>

sound/soc/codecs/cs35l34.c

···
 		cs35l34->core_supplies);
 }
 
-static int __maybe_unused cs35l34_runtime_resume(struct device *dev)
+static int cs35l34_runtime_resume(struct device *dev)
 {
 	struct cs35l34_private *cs35l34 = dev_get_drvdata(dev);
 	int ret;
···
 	return ret;
 }
 
-static int __maybe_unused cs35l34_runtime_suspend(struct device *dev)
+static int cs35l34_runtime_suspend(struct device *dev)
 {
 	struct cs35l34_private *cs35l34 = dev_get_drvdata(dev);
 
···
 }
 
 static const struct dev_pm_ops cs35l34_pm_ops = {
-	SET_RUNTIME_PM_OPS(cs35l34_runtime_suspend,
-			   cs35l34_runtime_resume,
-			   NULL)
+	RUNTIME_PM_OPS(cs35l34_runtime_suspend, cs35l34_runtime_resume, NULL)
 };
 
 static const struct of_device_id cs35l34_of_match[] = {
···
 static struct i2c_driver cs35l34_i2c_driver = {
 	.driver = {
 		.name = "cs35l34",
-		.pm = &cs35l34_pm_ops,
+		.pm = pm_ptr(&cs35l34_pm_ops),
 		.of_match_table = cs35l34_of_match,
 
 		},