Input: bu21013_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>
Cc: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20230102181842.718010-36-jic23@kernel.orgSigned-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/touchscreen/bu21013_ts.c

@@ -560,7 +560,7 @@ static void bu21013_remove(struct i2c_client *client)
 	/* The resources will be freed by devm */
 }
 
-static int __maybe_unused bu21013_suspend(struct device *dev)
+static int bu21013_suspend(struct device *dev)
 {
 	struct i2c_client *client = to_i2c_client(dev);
 	struct bu21013_ts *ts = i2c_get_clientdata(client);
@@ -575,7 +575,7 @@ static int __maybe_unused bu21013_suspend(struct device *dev)
 	return 0;
 }
 
-static int __maybe_unused bu21013_resume(struct device *dev)
+static int bu21013_resume(struct device *dev)
 {
 	struct i2c_client *client = to_i2c_client(dev);
 	struct bu21013_ts *ts = i2c_get_clientdata(client);
@@ -604,7 +604,7 @@ static int __maybe_unused bu21013_resume(struct device *dev)
 	return 0;
 }
 
-static SIMPLE_DEV_PM_OPS(bu21013_dev_pm_ops, bu21013_suspend, bu21013_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(bu21013_dev_pm_ops, bu21013_suspend, bu21013_resume);
 
 static const struct i2c_device_id bu21013_id[] = {
 	{ DRIVER_TP, 0 },
@@ -615,7 +615,7 @@ MODULE_DEVICE_TABLE(i2c, bu21013_id);
 static struct i2c_driver bu21013_driver = {
 	.driver	= {
 		.name	=	DRIVER_TP,
-		.pm	=	&bu21013_dev_pm_ops,
+		.pm	=	pm_sleep_ptr(&bu21013_dev_pm_ops),
 	},
 	.probe_new	=	bu21013_probe,
 	.remove		=	bu21013_remove,