gpio: realtek-otto: Add RTL931x support

The RTL931x SoC series has support for 32 GPIOs, although not all lines
may be broken out to a physical pad.

The GPIO bank's parent interrupt can be routed to either or both of the
SoC's CPU cores by the GIC. Line-by-line IRQ balancing is not possible
on these SoCs.

Signed-off-by: Sander Vanheule <[e-mail]>
Signed-off-by: Bartosz Golaszewski <[e-mail]>

drivers/gpio/gpio-realtek-otto.c

···
 		.compatible = "realtek,rtl9300-gpio",
 		.data = (void *)(GPIO_PORTS_REVERSED | GPIO_INTERRUPTS_PER_CPU)
 	},
+	{
+		.compatible = "realtek,rtl9310-gpio",
+	},
 	{}
 };
 MODULE_DEVICE_TABLE(of, realtek_gpio_of_match);