CONFIG_CPU_S5PC100_INIT is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

CONFIG_CPU_S5PC100_INIT (not configurable)

modulename: s5pc100-init.ko

configname: CONFIG_CPU_S5PC100_INIT

Linux Kernel Configuration
└─>CPU_S5PC100_INIT
In linux kernel since version 2.6.32 (release Date: 2009-12-02)  
Common initialisation code for the S5PC1XX

source code: