CONFIG_ST_IRQCHIP (not configurable)

modulename: irq-st.ko

configname: CONFIG_ST_IRQCHIP

Linux Kernel Configuration
└─>Device Drivers
└─>ST_IRQCHIP
In linux kernel since version 4.1 (release Date: 2015-06-21)  
Enables SysCfg Controlled IRQs on STi based platforms.

source code: