CONFIG_CPU_S3C2412 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
SAMSUNG S3C2412
modulename: s3c2412.ko
configname: CONFIG_CPU_S3C2412
Linux Kernel Configuration
└─>SAMSUNG S3C24XX SoCs Support
└─>SAMSUNG S3C2412
In linux kernel since version 2.6.18 (release Date: 2006-09-19)
Support for the S3C2412 and S3C2413 SoCs from the S3C24XX line