CONFIG_ARC_MCIP is not available for thedefaultarchitecture x86.
Result is shown for architecture arc

ARConnect Multicore IP (MCIP) Support

modulename: mcip.ko

configname: CONFIG_ARC_MCIP

Linux Kernel Configuration
└─>ARC Architecture Configuration
└─>ARC CPU Configuration
└─>ARConnect Multicore IP (MCIP) Support
In linux kernel since version 4.1 (release Date: 2015-06-21)  
This IP block enables SMP in ARC-HS38 cores.
It provides for cross-core interrupts, multi-core debug
hardware semaphores, shared memory,....

source code:
arch/arc/kernel/mcip.c