input: ektf2127 - 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: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Cc: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20230102181842.718010-45-jic23@kernel.orgSigned-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/touchscreen/ektf2127.c

@@ -177,7 +177,7 @@ static void ektf2127_stop(struct input_dev *dev)
 	gpiod_set_value_cansleep(ts->power_gpios, 0);
 }
 
-static int __maybe_unused ektf2127_suspend(struct device *dev)
+static int ektf2127_suspend(struct device *dev)
 {
 	struct ektf2127_ts *ts = i2c_get_clientdata(to_i2c_client(dev));
 
@@ -189,7 +189,7 @@ static int __maybe_unused ektf2127_suspend(struct device *dev)
 	return 0;
 }
 
-static int __maybe_unused ektf2127_resume(struct device *dev)
+static int ektf2127_resume(struct device *dev)
 {
 	struct ektf2127_ts *ts = i2c_get_clientdata(to_i2c_client(dev));
 
@@ -201,8 +201,8 @@ static int __maybe_unused ektf2127_resume(struct device *dev)
 	return 0;
 }
 
-static SIMPLE_DEV_PM_OPS(ektf2127_pm_ops, ektf2127_suspend,
-			 ektf2127_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(ektf2127_pm_ops, ektf2127_suspend,
+				ektf2127_resume);
 
 static int ektf2127_query_dimension(struct i2c_client *client, bool width)
 {
@@ -348,7 +348,7 @@ MODULE_DEVICE_TABLE(i2c, ektf2127_i2c_id);
 static struct i2c_driver ektf2127_driver = {
 	.driver = {
 		.name	= "elan_ektf2127",
-		.pm	= &ektf2127_pm_ops,
+		.pm	= pm_sleep_ptr(&ektf2127_pm_ops),
 		.of_match_table = of_match_ptr(ektf2127_of_match),
 	},
 	.probe_new = ektf2127_probe,