ASoC: wm5100: 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 superfluous CONFIG_PM
ifdefs.

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/wm5100.c

···
 	gpiod_set_value_cansleep(wm5100->ldo_ena, 0);
 }
 
-#ifdef CONFIG_PM
 static int wm5100_runtime_suspend(struct device *dev)
 {
 	struct wm5100_priv *wm5100 = dev_get_drvdata(dev);
···
 
 	return 0;
 }
-#endif
 
 static const struct dev_pm_ops wm5100_pm = {
-	SET_RUNTIME_PM_OPS(wm5100_runtime_suspend, wm5100_runtime_resume,
-			   NULL)
+	RUNTIME_PM_OPS(wm5100_runtime_suspend, wm5100_runtime_resume, NULL)
 };
 
 static const struct i2c_device_id wm5100_i2c_id[] = {
···
 static struct i2c_driver wm5100_i2c_driver = {
 	.driver = {
 		.name = "wm5100",
-		.pm = &wm5100_pm,
+		.pm = pm_ptr(&wm5100_pm),
 	},
 	.probe =    wm5100_i2c_probe,
 	.remove =   wm5100_i2c_remove,