CONFIG_PINCTRL_IMX (not configurable)

modulename: pinctrl-imx.ko

configname: CONFIG_PINCTRL_IMX

Linux Kernel Configuration
└─>Device Drivers
└─>Pin controllers
└─>Device Tree and Open Firmware support
└─>PINCTRL_IMX
In linux kernel since version 3.1 (release Date: 2011-10-24)  
source code:
drivers/pinctrl/freescale/pinctrl-imx.c