mfd: atmel-flexcom: Remove #ifdef CONFIG_PM_SLEEP

Remove compilation flag and use __maybe_unused and pm_ptr instead.
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20211028135138.3481166-2-claudiu.beznea@microchip.com

drivers/mfd/atmel-flexcom.c

@@ -87,8 +87,7 @@ static const struct of_device_id atmel_flexcom_of_match[] = {
 };
 MODULE_DEVICE_TABLE(of, atmel_flexcom_of_match);
 
-#ifdef CONFIG_PM_SLEEP
-static int atmel_flexcom_resume(struct device *dev)
+static int __maybe_unused atmel_flexcom_resume(struct device *dev)
 {
 	struct atmel_flexcom *ddata = dev_get_drvdata(dev);
 	int err;
@@ -105,7 +104,6 @@ static int atmel_flexcom_resume(struct device *dev)
 
 	return 0;
 }
-#endif
 
 static SIMPLE_DEV_PM_OPS(atmel_flexcom_pm_ops, NULL,
 			 atmel_flexcom_resume);
@@ -114,7 +112,7 @@ static struct platform_driver atmel_flexcom_driver = {
 	.probe	= atmel_flexcom_probe,
 	.driver	= {
 		.name		= "atmel_flexcom",
-		.pm		= &atmel_flexcom_pm_ops,
+		.pm		= pm_ptr(&atmel_flexcom_pm_ops),
 		.of_match_table	= atmel_flexcom_of_match,
 	},
 };