pinctrl: MediaTek: add pinctrl driver for MT7623 SoC

This patch adds pinctrl support for MT7623 SoC. And most of the
structures are used to hold the hardware configuration for each
pin.

Tested-by: Matthias Brugger <matthias.bgg@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
4 files changed