CONFIG_CPU_S3C2416 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

CONFIG_CPU_S3C2416 (not configurable)

modulename: s3c2416.ko

and/or

irq.ko

configname: CONFIG_CPU_S3C2416

Linux Kernel Configuration
└─>CPU_S3C2416
In linux kernel since version 2.6.35 (release Date: 2010-08-01)  
Support for the S3C2416 SoC from the S3C24XX line

source code:
/arch/arm/mach-s3c2416/


is selected by
CONFIG_SERIAL_S3C2440