CONFIG_ARCH_EXYNOS4 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
Samsung Exynos4
configname: CONFIG_ARCH_EXYNOS4
Linux Kernel Configuration
└─>Samsung Exynos
└─>Samsung Exynos4
In linux kernel since version 2.6.39 (release Date: 2011-05-18)
Samsung Exynos4 (Cortex-A9) SoC based systems