iio: light: isl29028: Use DEFINE_RUNTIME_DEV_PM_OPS() and pm_ptr()

Using these new macros allows removal of unused pm_ops structure
and functions if !CONFIG_PM without the need to mark the functions
__maybe_unused.
Signed-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Brian Masney <masneyb@onstation.org>
Reviewed-by: NBrian Masney <masneyb@onstation.org>
Reviewed-by: NPaul Cercueil <paul@crapouillou.net>
Link: https://lore.kernel.org/r/20220621202719.13644-30-jic23@kernel.org

drivers/iio/light/isl29028.c

@@ -651,7 +651,7 @@ static int isl29028_remove(struct i2c_client *client)
 	return 0;
 }
 
-static int __maybe_unused isl29028_suspend(struct device *dev)
+static int isl29028_suspend(struct device *dev)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
 	struct isl29028_chip *chip = iio_priv(indio_dev);
@@ -666,7 +666,7 @@ static int __maybe_unused isl29028_suspend(struct device *dev)
 	return ret;
 }
 
-static int __maybe_unused isl29028_resume(struct device *dev)
+static int isl29028_resume(struct device *dev)
 {
 	/**
 	 * The specific component (ALS/IR or proximity) will enable itself as
@@ -676,11 +676,8 @@ static int __maybe_unused isl29028_resume(struct device *dev)
 	return 0;
 }
 
-static const struct dev_pm_ops isl29028_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
-				pm_runtime_force_resume)
-	SET_RUNTIME_PM_OPS(isl29028_suspend, isl29028_resume, NULL)
-};
+static DEFINE_RUNTIME_DEV_PM_OPS(isl29028_pm_ops, isl29028_suspend,
+				 isl29028_resume, NULL);
 
 static const struct i2c_device_id isl29028_id[] = {
 	{"isl29028", 0},
@@ -700,7 +697,7 @@ MODULE_DEVICE_TABLE(of, isl29028_of_match);
 static struct i2c_driver isl29028_driver = {
 	.driver  = {
 		.name = "isl29028",
-		.pm = &isl29028_pm_ops,
+		.pm = pm_ptr(&isl29028_pm_ops),
 		.of_match_table = isl29028_of_match,
 	},
 	.probe	 = isl29028_probe,