CONFIG_MACH_SMDK4412 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
default or selected kernelversion does not have config value CONFIG_MACH_SMDK4412.
Result is shown for kernelversion 6.2.5

SMDK4412

modulename: mach-smdk4x12.ko

configname: CONFIG_MACH_SMDK4412

Linux Kernel Configuration
└─>SAMSUNG EXYNOS SoCs Support
└─>SMDK4412
In linux kernel since version 3.1 (release Date: 2011-10-24)  
Machine support for Samsung SMDK4412

source code: