CONFIG_PPC_COPRO_BASE is not available for thedefaultarchitecture x86.
Result is shown for architecture powerpc

CONFIG_PPC_COPRO_BASE (not configurable)

modulename: copro_fault.ko

configname: CONFIG_PPC_COPRO_BASE

Linux Kernel Configuration
└─>Kernel options
└─>PPC_COPRO_BASE
In linux kernel since version 3.18 (release Date: 2014-12-07)  
source code: