gpio: rcar: fix gpio_rcar_of_table

The device table needs to be terminated with an empty element.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Cc: Simon Horman <horms+renesas@verge.net.au>

drivers/gpio/gpio-rcar.c

@@ -437,6 +437,7 @@ static const struct of_device_id gpio_rcar_of_table[] = {
 	{
 		.compatible = "renesas,gpio-rcar",
 	},
+	{ },
 };
 
 MODULE_DEVICE_TABLE(of, gpio_rcar_of_table);