[PATCH] pinctrl: mediatek: mt8195: enable driver on mtk platforms

[Miles Chen]

> Set the pinctrl driver as built-in by default if
> ARM64 and ARCH_MEDIATEK are enabled.
> 
> Fixes: 6cf5e9ef362a ("pinctrl: add pinctrl driver on mt8195")
> Signed-off-by: Fabien Parent <fparent at baylibre.com>

Reviewed-by: Miles Chen <miles.chen at mediatek.com>