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

MIPS Coherent Processing System support

modulename: smp-cps.ko

configname: CONFIG_MIPS_CPS

Linux Kernel Configuration
└─>Kernel type
└─>MIPS Coherent Processing System support
In linux kernel since version 3.10 (release Date: 2013-06-30)  
Select this if you wish to run an SMP kernel across multiple cores
within a MIPS Coherent Processing System. When this option is
enabled the kernel will probe for other cores and boot them with
no external assistance. It is safe to enable this when hardware
support is unavailable.

source code:
arch/mips/kernel/


is selected by
CONFIG_MIPS_CPS_CPUIDLE