hwmon: (ina3221) Use DEFINE_RUNTIME_DEV_PM_OPS() and pm_ptr()

These new macros allow the compiler to see all the functions even if
!CONFIG_PM* and remove the structures and functions if unused.
This removes the need for __maybe_unused markings.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Ninad Malwade <nmalwade@nvidia.com>
Link: https://lore.kernel.org/r/20220925172759.3573439-19-jic23@kernel.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Author: jic23

drivers/hwmon/ina3221.c

@@ -930,7 +930,7 @@ static int ina3221_remove(struct i2c_client *client)
 	return 0;
 }
 
-static int __maybe_unused ina3221_suspend(struct device *dev)
+static int ina3221_suspend(struct device *dev)
 {
 	struct ina3221_data *ina = dev_get_drvdata(dev);
 	int ret;
@@ -953,7 +953,7 @@ static int __maybe_unused ina3221_suspend(struct device *dev)
 	return 0;
 }
 
-static int __maybe_unused ina3221_resume(struct device *dev)
+static int ina3221_resume(struct device *dev)
 {
 	struct ina3221_data *ina = dev_get_drvdata(dev);
 	int ret;
@@ -996,11 +996,8 @@ static int __maybe_unused ina3221_resume(struct device *dev)
 	return 0;
 }
 
-static const struct dev_pm_ops ina3221_pm = {
-	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
-				pm_runtime_force_resume)
-	SET_RUNTIME_PM_OPS(ina3221_suspend, ina3221_resume, NULL)
-};
+static DEFINE_RUNTIME_DEV_PM_OPS(ina3221_pm, ina3221_suspend, ina3221_resume,
+				 NULL);
 
 static const struct of_device_id ina3221_of_match_table[] = {
 	{ .compatible = "ti,ina3221", },
@@ -1020,7 +1017,7 @@ static struct i2c_driver ina3221_i2c_driver = {
 	.driver = {
 		.name = INA3221_DRIVER_NAME,
 		.of_match_table = ina3221_of_match_table,
-		.pm = &ina3221_pm,
+		.pm = pm_ptr(&ina3221_pm),
 	},
 	.id_table = ina3221_ids,
 };