CONFIG_S3C2443_COMMON is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

CONFIG_S3C2443_COMMON (not configurable)

modulename: common-s3c2443.ko

configname: CONFIG_S3C2443_COMMON

Linux Kernel Configuration
└─>SAMSUNG S3C24XX SoCs Support
└─>S3C2443_COMMON
In linux kernel since version 3.1 (release Date: 2011-10-24)  
Common code for the S3C2443 and similar processors, which includes
the S3C2416 and S3C2450.

source code:
arch/arm/mach-s3c24xx/common-s3c2443.c