Input: chipone_icn8505 - 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: 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/20230102181842.718010-39-jic23@kernel.orgSigned-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/touchscreen/chipone_icn8505.c

@@ -460,7 +460,7 @@ static int icn8505_probe(struct i2c_client *client)
 	return 0;
 }
 
-static int __maybe_unused icn8505_suspend(struct device *dev)
+static int icn8505_suspend(struct device *dev)
 {
 	struct icn8505_data *icn8505 = i2c_get_clientdata(to_i2c_client(dev));
 
@@ -471,7 +471,7 @@ static int __maybe_unused icn8505_suspend(struct device *dev)
 	return 0;
 }
 
-static int __maybe_unused icn8505_resume(struct device *dev)
+static int icn8505_resume(struct device *dev)
 {
 	struct icn8505_data *icn8505 = i2c_get_clientdata(to_i2c_client(dev));
 	int error;
@@ -484,7 +484,7 @@ static int __maybe_unused icn8505_resume(struct device *dev)
 	return 0;
 }
 
-static SIMPLE_DEV_PM_OPS(icn8505_pm_ops, icn8505_suspend, icn8505_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(icn8505_pm_ops, icn8505_suspend, icn8505_resume);
 
 static const struct acpi_device_id icn8505_acpi_match[] = {
 	{ "CHPN0001" },
@@ -495,7 +495,7 @@ MODULE_DEVICE_TABLE(acpi, icn8505_acpi_match);
 static struct i2c_driver icn8505_driver = {
 	.driver = {
 		.name	= "chipone_icn8505",
-		.pm	= &icn8505_pm_ops,
+		.pm	= pm_sleep_ptr(&icn8505_pm_ops),
 		.acpi_match_table = icn8505_acpi_match,
 	},
 	.probe_new = icn8505_probe,