hwmon: (gpio-fan) Fix module autoload for OF platform driver

This platform driver has a OF device ID table but the OF module
alias information is not created so module autoloading won't work.
Signed-off-by: NLuis de Bethencourt <luisbg@osg.samsung.com>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

drivers/hwmon/gpio-fan.c

@@ -539,6 +539,7 @@ static const struct of_device_id of_gpio_fan_match[] = {
 	{ .compatible = "gpio-fan", },
 	{},
 };
+MODULE_DEVICE_TABLE(of, of_gpio_fan_match);
 #endif /* CONFIG_OF_GPIO */
 
 static int gpio_fan_probe(struct platform_device *pdev)