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

NCP

modulename: mach-ncp.ko

configname: CONFIG_MACH_NCP

Linux Kernel Configuration
└─>Samsung S3C64XX
└─>NCP
In linux kernel since version 2.6.31 (release Date: 2009-09-09)  
Machine support for the Samsung NCP

source code: