CONFIG_SIFIVE_PLIC (not configurable)

modulename: irq-sifive-plic.ko

configname: CONFIG_SIFIVE_PLIC

Linux Kernel Configuration
└─>Device Drivers
└─>IRQ chip support
└─>SIFIVE_PLIC
In linux kernel since version 3.10 (release Date: 2013-06-30)  
source code:
selects
CONFIG_IRQ_DOMAIN_HIERARCHY
CONFIG_GENERIC_IRQ_EFFECTIVE_AFF_MASK

depends
CONFIG_RISCV