CONFIG_MIPS_CPC is not available for thedefaultarchitecture x86.
Result is shown for architecture mips

CONFIG_MIPS_CPC (not configurable)

modulename: mips-cpc.ko

configname: CONFIG_MIPS_CPC

Linux Kernel Configuration
└─>Kernel type
└─>MIPS_CPC
In linux kernel since version 3.15 (release Date: 2014-06-08)  
source code:
arch/mips/kernel/mips-cpc.c