Input: max8925_onkey - switch to DEFINE_SIMPLE_DEV_PM_OPS() and pm_sleep_ptr()

SIMPLE_DEV_PM_OPS() is deprecated as it requires explicit protection
against unused function warnings.  The new combination of pm_sleep_ptr()
and DEFINE_SIMPLE_DEV_PM_OPS() allows the compiler to see the functions,
thus suppressing the warning, but still allowing the unused code to be
removed. Thus also drop the __maybe_unused markings.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20230102181842.718010-13-jic23@kernel.orgSigned-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/misc/max8925_onkey.c

@@ -129,7 +129,7 @@ static int max8925_onkey_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static int __maybe_unused max8925_onkey_suspend(struct device *dev)
+static int max8925_onkey_suspend(struct device *dev)
 {
 	struct platform_device *pdev = to_platform_device(dev);
 	struct max8925_onkey_info *info = platform_get_drvdata(pdev);
@@ -143,7 +143,7 @@ static int __maybe_unused max8925_onkey_suspend(struct device *dev)
 	return 0;
 }
 
-static int __maybe_unused max8925_onkey_resume(struct device *dev)
+static int max8925_onkey_resume(struct device *dev)
 {
 	struct platform_device *pdev = to_platform_device(dev);
 	struct max8925_onkey_info *info = platform_get_drvdata(pdev);
@@ -157,12 +157,13 @@ static int __maybe_unused max8925_onkey_resume(struct device *dev)
 	return 0;
 }
 
-static SIMPLE_DEV_PM_OPS(max8925_onkey_pm_ops, max8925_onkey_suspend, max8925_onkey_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(max8925_onkey_pm_ops,
+				max8925_onkey_suspend, max8925_onkey_resume);
 
 static struct platform_driver max8925_onkey_driver = {
 	.driver		= {
 		.name	= "max8925-onkey",
-		.pm	= &max8925_onkey_pm_ops,
+		.pm	= pm_sleep_ptr(&max8925_onkey_pm_ops),
 	},
 	.probe		= max8925_onkey_probe,
 };