gpio: arizona: Add support for WM8280/WM8281

Signed-off-by: NRichard Fitzgerald <rf@opensource.wolfsonmicro.com>
Acked-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NCharles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

drivers/gpio/gpio-arizona.c

@@ -116,6 +116,7 @@ static int arizona_gpio_probe(struct platform_device *pdev)
 	switch (arizona->type) {
 	case WM5102:
 	case WM5110:
+	case WM8280:
 	case WM8997:
 		arizona_gpio->gpio_chip.ngpio = 5;
 		break;