CONFIG_PINCTRL_SH_FUNC_GPIO (not configurable)

configname: CONFIG_PINCTRL_SH_FUNC_GPIO

Linux Kernel Configuration
└─>Device Drivers
└─>Pin controllers
└─>PINCTRL_SH_FUNC_GPIO
In linux kernel since version 4.14.326 (release Date: 2023-09-23)  
This enables legacy function GPIOs for SH platforms