Input: mcs5000_ts - 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/20230102181842.718010-53-jic23@kernel.orgSigned-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/touchscreen/mcs5000_ts.c

@@ -241,7 +241,7 @@ static int mcs5000_ts_probe(struct i2c_client *client)
 	return 0;
 }
 
-static int __maybe_unused mcs5000_ts_suspend(struct device *dev)
+static int mcs5000_ts_suspend(struct device *dev)
 {
 	struct i2c_client *client = to_i2c_client(dev);
 
@@ -251,7 +251,7 @@ static int __maybe_unused mcs5000_ts_suspend(struct device *dev)
 	return 0;
 }
 
-static int __maybe_unused mcs5000_ts_resume(struct device *dev)
+static int mcs5000_ts_resume(struct device *dev)
 {
 	struct i2c_client *client = to_i2c_client(dev);
 	struct mcs5000_ts_data *data = i2c_get_clientdata(client);
@@ -262,7 +262,8 @@ static int __maybe_unused mcs5000_ts_resume(struct device *dev)
 	return 0;
 }
 
-static SIMPLE_DEV_PM_OPS(mcs5000_ts_pm, mcs5000_ts_suspend, mcs5000_ts_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(mcs5000_ts_pm,
+				mcs5000_ts_suspend, mcs5000_ts_resume);
 
 static const struct i2c_device_id mcs5000_ts_id[] = {
 	{ "mcs5000_ts", 0 },
@@ -274,7 +275,7 @@ static struct i2c_driver mcs5000_ts_driver = {
 	.probe_new	= mcs5000_ts_probe,
 	.driver = {
 		.name = "mcs5000_ts",
-		.pm   = &mcs5000_ts_pm,
+		.pm   = pm_sleep_ptr(&mcs5000_ts_pm),
 	},
 	.id_table	= mcs5000_ts_id,
 };