CONFIG_PINCTRL_SH_PFC_GPIO (not configurable)

modulename: gpio.ko

configname: CONFIG_PINCTRL_SH_PFC_GPIO

Linux Kernel Configuration
└─>Device Drivers
└─>Pin controllers
└─>PINCTRL_SH_PFC_GPIO
In linux kernel since version 3.10 (release Date: 2013-06-30)  
This enables pin control and GPIO drivers for SH/SH Mobile platforms

source code:
drivers/pinctrl/sh-pfc/gpio.c