gpio: mlxbf2: Use modern PM macros

Use the modern PM macros for the suspend and resume functions to be
automatically dropped by the compiler when CONFIG_PM or
CONFIG_PM_SLEEP are disabled, without having to use __maybe_unused

Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Link: https://lore.kernel.org/r/20251124002105.25429-7-jszhang@kernel.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

Author: xhackerustc

drivers/gpio/gpio-mlxbf2.c

@@ -424,7 +424,7 @@ mlxbf2_gpio_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static int __maybe_unused mlxbf2_gpio_suspend(struct device *dev)
+static int mlxbf2_gpio_suspend(struct device *dev)
 {
 	struct mlxbf2_gpio_context *gs = dev_get_drvdata(dev);
 
@@ -436,7 +436,7 @@ static int __maybe_unused mlxbf2_gpio_suspend(struct device *dev)
 	return 0;
 }
 
-static int __maybe_unused mlxbf2_gpio_resume(struct device *dev)
+static int mlxbf2_gpio_resume(struct device *dev)
 {
 	struct mlxbf2_gpio_context *gs = dev_get_drvdata(dev);
 
@@ -447,7 +447,7 @@ static int __maybe_unused mlxbf2_gpio_resume(struct device *dev)
 
 	return 0;
 }
-static SIMPLE_DEV_PM_OPS(mlxbf2_pm_ops, mlxbf2_gpio_suspend, mlxbf2_gpio_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(mlxbf2_pm_ops, mlxbf2_gpio_suspend, mlxbf2_gpio_resume);
 
 static const struct acpi_device_id __maybe_unused mlxbf2_gpio_acpi_match[] = {
 	{ "MLNXBF22", 0 },
@@ -459,7 +459,7 @@ static struct platform_driver mlxbf2_gpio_driver = {
 	.driver = {
 		.name = "mlxbf2_gpio",
 		.acpi_match_table = mlxbf2_gpio_acpi_match,
-		.pm = &mlxbf2_pm_ops,
+		.pm = pm_sleep_ptr(&mlxbf2_pm_ops),
 	},
 	.probe    = mlxbf2_gpio_probe,
 };