Input: st1232 - 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: John Keeping <john@metanate.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20230102181842.718010-61-jic23@kernel.orgSigned-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/touchscreen/st1232.c

@@ -340,7 +340,7 @@ static int st1232_ts_probe(struct i2c_client *client)
 	return 0;
 }
 
-static int __maybe_unused st1232_ts_suspend(struct device *dev)
+static int st1232_ts_suspend(struct device *dev)
 {
 	struct i2c_client *client = to_i2c_client(dev);
 	struct st1232_ts_data *ts = i2c_get_clientdata(client);
@@ -353,7 +353,7 @@ static int __maybe_unused st1232_ts_suspend(struct device *dev)
 	return 0;
 }
 
-static int __maybe_unused st1232_ts_resume(struct device *dev)
+static int st1232_ts_resume(struct device *dev)
 {
 	struct i2c_client *client = to_i2c_client(dev);
 	struct st1232_ts_data *ts = i2c_get_clientdata(client);
@@ -366,7 +366,7 @@ static int __maybe_unused st1232_ts_resume(struct device *dev)
 	return 0;
 }
 
-static SIMPLE_DEV_PM_OPS(st1232_ts_pm_ops,
+static DEFINE_SIMPLE_DEV_PM_OPS(st1232_ts_pm_ops,
 				st1232_ts_suspend, st1232_ts_resume);
 
 static const struct i2c_device_id st1232_ts_id[] = {
@@ -390,7 +390,7 @@ static struct i2c_driver st1232_ts_driver = {
 		.name	= ST1232_TS_NAME,
 		.of_match_table = st1232_ts_dt_ids,
 		.probe_type	= PROBE_PREFER_ASYNCHRONOUS,
-		.pm	= &st1232_ts_pm_ops,
+		.pm	= pm_sleep_ptr(&st1232_ts_pm_ops),
 	},
 };