pinctrl: mediatek: Make eint_m u16

For SoC's which lacks EINT support, U16_MAX is assigned to both eint_m
and eint_n through macro NO_EINT_SUPPORT. This will generate integer
overflow warning because eint_m is declared as u8 type. Hence modify
the eint_m type to u16.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h

@@ -154,7 +154,7 @@ struct mtk_func_desc {
  * @eitn_n:		the eint number for this pin
  */
 struct mtk_eint_desc {
-	u8 eint_m;
+	u16 eint_m;
 	u16 eint_n;
 };