The mt76x8 SDXC pin register definition is incompatible with the
mtmips generic pinctrl driver structure. This hack allows us to
mux the SDXC IO to different pin groups in device tree.
Signed-off-by: Shiji Yang <yangshiji66@qq.com>
Link: https://github.com/openwrt/openwrt/pull/17446
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>