CONFIG_CPU_CACHE_NOP is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

CONFIG_CPU_CACHE_NOP (not configurable)

modulename: cache-nop.ko

configname: CONFIG_CPU_CACHE_NOP

Linux Kernel Configuration
└─>CPU_CACHE_NOP
In linux kernel since version 3.10 (release Date: 2013-06-30)  
source code:
/arch/arm/mm/