iio: adc: ad4630: make use of DEFINE_SIMPLE_DEV_PM_OPS()

Use the proper macros to define a PM struct in conjucntion with using
pm_ptr(). Otherwise, we get compiler complains if PM is not enabled.

Fixes: fecd9b7 ("iio: adc: ad4630: make use of pm_ptr()")
Signed-off-by: Nuno Sá <[email protected]>

Author: nunojsa

drivers/iio/adc/ad4630.c

@@ -1585,9 +1585,8 @@ static int ad4630_runtime_resume(struct device *dev)
 	return 0;
 }
 
-static const struct dev_pm_ops ad4630_pm_ops = {
-	SET_RUNTIME_PM_OPS(ad4630_runtime_suspend, ad4630_runtime_resume, NULL)
-};
+static DEFINE_SIMPLE_DEV_PM_OPS(ad4630_pm_ops, ad4630_runtime_suspend,
+				ad4630_runtime_resume);
 
 static const struct spi_device_id ad4630_id_table[] = {
 	{ "ad4030-24", (kernel_ulong_t)&ad4630_chip_info[ID_AD4030_24] },