hwmon: (max31722) Switch to DEFINE_SIMPLE_DEV_PM_OPS() and pm_sleep_ptr()

These newer PM macros allow the compiler to see what code it can remove
if !CONFIG_PM_SLEEP. This allows the removal of __maybe_unused markings
whilst achieving the same result.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://lore.kernel.org/r/20220925172759.3573439-10-jic23@kernel.orgSigned-off-by: Guenter Roeck <linux@roeck-us.net>

drivers/hwmon/max31722.c

@@ -113,7 +113,7 @@ static void max31722_remove(struct spi_device *spi)
 		dev_warn(&spi->dev, "Failed to put device in stand-by mode\n");
 }
 
-static int __maybe_unused max31722_suspend(struct device *dev)
+static int max31722_suspend(struct device *dev)
 {
 	struct spi_device *spi_device = to_spi_device(dev);
 	struct max31722_data *data = spi_get_drvdata(spi_device);
@@ -121,7 +121,7 @@ static int __maybe_unused max31722_suspend(struct device *dev)
 	return max31722_set_mode(data, MAX31722_MODE_STANDBY);
 }
 
-static int __maybe_unused max31722_resume(struct device *dev)
+static int max31722_resume(struct device *dev)
 {
 	struct spi_device *spi_device = to_spi_device(dev);
 	struct max31722_data *data = spi_get_drvdata(spi_device);
@@ -129,7 +129,7 @@ static int __maybe_unused max31722_resume(struct device *dev)
 	return max31722_set_mode(data, MAX31722_MODE_CONTINUOUS);
 }
 
-static SIMPLE_DEV_PM_OPS(max31722_pm_ops, max31722_suspend, max31722_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(max31722_pm_ops, max31722_suspend, max31722_resume);
 
 static const struct spi_device_id max31722_spi_id[] = {
 	{"max31722", 0},
@@ -141,7 +141,7 @@ MODULE_DEVICE_TABLE(spi, max31722_spi_id);
 static struct spi_driver max31722_driver = {
 	.driver = {
 		.name = "max31722",
-		.pm = &max31722_pm_ops,
+		.pm = pm_sleep_ptr(&max31722_pm_ops),
 	},
 	.probe =            max31722_probe,
 	.remove =           max31722_remove,