gpio: arizona: Add support for WM8280/WM8281

Signed-off-by: Richard Fitzgerald <rf@opensource.wolfsonmicro.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

drivers/gpio/gpio-arizona.c

diff --git a/drivers/gpio/gpio-arizona.c b/drivers/gpio/gpio-arizona.c
index fe369f5..9665d0a 100644
--- a/drivers/gpio/gpio-arizona.c
+++ b/drivers/gpio/gpio-arizona.c
@@ -116,6 +116,7 @@
 	switch (arizona->type) {
 	case WM5102:
 	case WM5110:
+	case WM8280:
 	case WM8997:
 		arizona_gpio->gpio_chip.ngpio = 5;
 		break;