power: reset: restart-poweroff: Add missing MODULE_DEVICE_TABLE

This patch adds missing MODULE_DEVICE_TABLE definition which generates
correct modalias for automatic loading of this driver when it is built
as an external module.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Bixuan Cui <cuibixuan@huawei.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

drivers/power/reset/restart-poweroff.c

@@ -45,6 +45,7 @@ static const struct of_device_id of_restart_poweroff_match[] = {
 	{ .compatible = "restart-poweroff", },
 	{},
 };
+MODULE_DEVICE_TABLE(of, of_restart_poweroff_match);
 
 static struct platform_driver restart_poweroff_driver = {
 	.probe = restart_poweroff_probe,