CONFIG_SMDK2440_CPU2442 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

SMDM2440 with S3C2442 CPU module

configname: CONFIG_SMDK2440_CPU2442

Linux Kernel Configuration
└─>S3C2442 Machines
└─>SMDM2440 with S3C2442 CPU module
In linux kernel since version 2.6.18 (release Date: 2006-09-19)