CONFIG_GPIOLIB_IRQCHIP (not configurable)

configname: CONFIG_GPIOLIB_IRQCHIP

Linux Kernel Configuration
└─>Device Drivers
└─>GPIO Support
└─>GPIOLIB_IRQCHIP
In linux kernel since version 3.10 (release Date: 2013-06-30)  
selects
CONFIG_IRQ_DOMAIN

depends
CONFIG_GPIOLIB