mfd: max77686: 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>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Lee Jones <lee@kernel.org>

drivers/mfd/max77686.c

@@ -226,7 +226,6 @@ static int max77686_i2c_probe(struct i2c_client *i2c)
 	return 0;
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int max77686_suspend(struct device *dev)
 {
 	struct i2c_client *i2c = to_i2c_client(dev);
@@ -261,14 +260,13 @@ static int max77686_resume(struct device *dev)
 
 	return 0;
 }
-#endif /* CONFIG_PM_SLEEP */
 
-static SIMPLE_DEV_PM_OPS(max77686_pm, max77686_suspend, max77686_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(max77686_pm, max77686_suspend, max77686_resume);
 
 static struct i2c_driver max77686_i2c_driver = {
 	.driver = {
 		   .name = "max77686",
-		   .pm = &max77686_pm,
+		   .pm = pm_sleep_ptr(&max77686_pm),
 		   .of_match_table = max77686_pmic_dt_match,
 	},
 	.probe_new = max77686_i2c_probe,