mfd: max8925-i2c: Remove #ifdef guards for PM related functions

Use the new DEFINE_SIMPLE_DEV_PM_OPS() and pm_sleep_ptr() macros
to handle the .suspend/.resume callbacks.

These macros allow the suspend and resume functions to be automatically
dropped by the compiler when CONFIG_SUSPEND is disabled, without having
to use #ifdef guards.

This has the advantage of always compiling these functions in,
independently of any Kconfig option. Thanks to that, bugs and other
regressions are subsequently easier to catch.
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Lee Jones <lee@kernel.org>

drivers/mfd/max8925-i2c.c

@@ -206,7 +206,6 @@ static void max8925_remove(struct i2c_client *client)
 	i2c_unregister_device(chip->rtc);
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int max8925_suspend(struct device *dev)
 {
 	struct i2c_client *client = to_i2c_client(dev);
@@ -226,9 +225,9 @@ static int max8925_resume(struct device *dev)
 		disable_irq_wake(chip->core_irq);
 	return 0;
 }
-#endif
 
-static SIMPLE_DEV_PM_OPS(max8925_pm_ops, max8925_suspend, max8925_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(max8925_pm_ops,
+				max8925_suspend, max8925_resume);
 
 static const struct of_device_id max8925_dt_ids[] = {
 	{ .compatible = "maxim,max8925", },
@@ -238,7 +237,7 @@ static const struct of_device_id max8925_dt_ids[] = {
 static struct i2c_driver max8925_driver = {
 	.driver	= {
 		.name	= "max8925",
-		.pm     = &max8925_pm_ops,
+		.pm     = pm_sleep_ptr(&max8925_pm_ops),
 		.of_match_table = max8925_dt_ids,
 	},
 	.probe_new	= max8925_probe,