gpio: rmobile: Add generic Gen3 compatible

Add generic compatible to the GPIO driver for Gen3 SoCs.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>

drivers/gpio/gpio-rcar.c

@@ -176,6 +176,7 @@ static const struct udevice_id rcar_gpio_ids[] = {
 	{ .compatible = "renesas,gpio-r8a7796" },
 	{ .compatible = "renesas,gpio-r8a77970" },
 	{ .compatible = "renesas,gpio-r8a77995" },
+	{ .compatible = "renesas,rcar-gen3-gpio" },
 	{ /* sentinel */ }
 };