CONFIG_CPU_S3C2442 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

Samsung S3C2442

configname: CONFIG_CPU_S3C2442

Linux Kernel Configuration
└─>Samsung S3C24XX SoCs (deprecated, see help)
└─>Samsung S3C24XX SoCs Support
└─>Samsung S3C2442
In linux kernel since version 2.6.18 (release Date: 2006-09-19)  
Support for S3C2442 Samsung Mobile CPU based systems.