Input: imx6ul_tsc - 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>
Cc: Haibo Chen <haibo.chen@nxp.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20230102181842.718010-51-jic23@kernel.orgSigned-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/touchscreen/imx6ul_tsc.c

@@ -512,7 +512,7 @@ static int imx6ul_tsc_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static int __maybe_unused imx6ul_tsc_suspend(struct device *dev)
+static int imx6ul_tsc_suspend(struct device *dev)
 {
 	struct platform_device *pdev = to_platform_device(dev);
 	struct imx6ul_tsc *tsc = platform_get_drvdata(pdev);
@@ -528,7 +528,7 @@ static int __maybe_unused imx6ul_tsc_suspend(struct device *dev)
 	return 0;
 }
 
-static int __maybe_unused imx6ul_tsc_resume(struct device *dev)
+static int imx6ul_tsc_resume(struct device *dev)
 {
 	struct platform_device *pdev = to_platform_device(dev);
 	struct imx6ul_tsc *tsc = platform_get_drvdata(pdev);
@@ -545,7 +545,7 @@ static int __maybe_unused imx6ul_tsc_resume(struct device *dev)
 	return retval;
 }
 
-static SIMPLE_DEV_PM_OPS(imx6ul_tsc_pm_ops,
+static DEFINE_SIMPLE_DEV_PM_OPS(imx6ul_tsc_pm_ops,
 				imx6ul_tsc_suspend, imx6ul_tsc_resume);
 
 static const struct of_device_id imx6ul_tsc_match[] = {
@@ -558,7 +558,7 @@ static struct platform_driver imx6ul_tsc_driver = {
 	.driver		= {
 		.name	= "imx6ul-tsc",
 		.of_match_table	= imx6ul_tsc_match,
-		.pm	= &imx6ul_tsc_pm_ops,
+		.pm	= pm_sleep_ptr(&imx6ul_tsc_pm_ops),
 	},
 	.probe		= imx6ul_tsc_probe,
 };