hwmon: (max6639) 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 #ifdef guards whilst
achieving the same result.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Roland Stigge <stigge@antcom.de>
Link: https://lore.kernel.org/r/20220925172759.3573439-12-jic23@kernel.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Author: jic23

drivers/hwmon/max6639.c

@@ -571,7 +571,6 @@ static int max6639_probe(struct i2c_client *client)
 	return PTR_ERR_OR_ZERO(hwmon_dev);
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int max6639_suspend(struct device *dev)
 {
 	struct i2c_client *client = to_i2c_client(dev);
@@ -609,7 +608,6 @@ static int max6639_resume(struct device *dev)
 	return i2c_smbus_write_byte_data(client,
 			MAX6639_REG_GCONFIG, ret & ~MAX6639_GCONFIG_STANDBY);
 }
-#endif /* CONFIG_PM_SLEEP */
 
 static const struct i2c_device_id max6639_id[] = {
 	{"max6639", 0},
@@ -618,13 +616,13 @@ static const struct i2c_device_id max6639_id[] = {
 
 MODULE_DEVICE_TABLE(i2c, max6639_id);
 
-static SIMPLE_DEV_PM_OPS(max6639_pm_ops, max6639_suspend, max6639_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(max6639_pm_ops, max6639_suspend, max6639_resume);
 
 static struct i2c_driver max6639_driver = {
 	.class = I2C_CLASS_HWMON,
 	.driver = {
 		   .name = "max6639",
-		   .pm = &max6639_pm_ops,
+		   .pm = pm_sleep_ptr(&max6639_pm_ops),
 		   },
 	.probe_new = max6639_probe,
 	.id_table = max6639_id,