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

CONFIG_MIPS_CM (not configurable)

modulename: mips-cm.ko

configname: CONFIG_MIPS_CM

Linux Kernel Configuration
└─>Kernel type
└─>MIPS_CM
In linux kernel since version 3.15 (release Date: 2014-06-08)  
source code:
arch/mips/kernel/mips-cm.c
is depended by
CONFIG_CEVT_GIC