regulator: arizona-micsupp: Add support for WM8280/WM8281

Signed-off-by: Richard Fitzgerald <rf@opensource.wolfsonmicro.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
diff --git a/drivers/regulator/arizona-micsupp.c b/drivers/regulator/arizona-micsupp.c
index 2007900..bfe5dac 100644
--- a/drivers/regulator/arizona-micsupp.c
+++ b/drivers/regulator/arizona-micsupp.c
@@ -246,6 +246,7 @@
 	 */
 	switch (arizona->type) {
 	case WM5110:
+	case WM8280:
 		desc = &arizona_micsupp_ext;
 		micsupp->init_data = arizona_micsupp_ext_default;
 		break;