CONFIG_ARCH_EXYNOS3 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
Samsung Exynos3
configname: CONFIG_ARCH_EXYNOS3
Linux Kernel Configuration
└─>Samsung Exynos
└─>Samsung Exynos3
In linux kernel since version 3.10 (release Date: 2013-06-30)
Samsung Exynos3 (Cortex-A7) SoC based systems