CONFIG_ARM_GIC_V3_ITS (not configurable)

modulename: irq-gic-v3-its.ko

configname: CONFIG_ARM_GIC_V3_ITS

Linux Kernel Configuration
└─>Device Drivers
└─>IRQ chip support
└─>ARM_GIC_V3_ITS
In linux kernel since version 3.10 (release Date: 2013-06-30)  
source code:
drivers/irqchip/
selects
CONFIG_GENERIC_MSI_IRQ_DOMAIN