CONFIG_MIPS_GIC (not configurable)

modulename: irq-gic.ko

and/or

irq-mips-gic.ko

configname: CONFIG_MIPS_GIC

Linux Kernel Configuration
└─>Device Drivers
└─>IRQ chip support
└─>MIPS_GIC
In linux kernel since version 3.10 (release Date: 2013-06-30)  
source code:
/arch/mips/ralink/
selects
CONFIG_GENERIC_IRQ_IPI
CONFIG_IRQ_DOMAIN_HIERARCHY
CONFIG_MIPS_CM

is selected by
CONFIG_CLKSRC_MIPS_GIC