mfd: 88pm860x: 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/88pm860x-core.c

@@ -1212,7 +1212,6 @@ static void pm860x_remove(struct i2c_client *client)
 	}
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int pm860x_suspend(struct device *dev)
 {
 	struct i2c_client *client = to_i2c_client(dev);
@@ -1232,9 +1231,8 @@ static int pm860x_resume(struct device *dev)
 		disable_irq_wake(chip->core_irq);
 	return 0;
 }
-#endif
 
-static SIMPLE_DEV_PM_OPS(pm860x_pm_ops, pm860x_suspend, pm860x_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(pm860x_pm_ops, pm860x_suspend, pm860x_resume);
 
 static const struct i2c_device_id pm860x_id_table[] = {
 	{ "88PM860x", 0 },
@@ -1251,7 +1249,7 @@ MODULE_DEVICE_TABLE(of, pm860x_dt_ids);
 static struct i2c_driver pm860x_driver = {
 	.driver	= {
 		.name	= "88PM860x",
-		.pm     = &pm860x_pm_ops,
+		.pm     = pm_sleep_ptr(&pm860x_pm_ops),
 		.of_match_table	= pm860x_dt_ids,
 	},
 	.probe_new	= pm860x_probe,