CONFIG_ARCH_EXYNOS4 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

SAMSUNG EXYNOS4

modulename: clock-exynos4.ko

and/or

dev-audio.ko

configname: CONFIG_ARCH_EXYNOS4

Linux Kernel Configuration
└─>SAMSUNG EXYNOS SoCs Support
└─>SAMSUNG EXYNOS4
In linux kernel since version 2.6.39 (release Date: 2011-05-18)  
Samsung EXYNOS4 SoCs based systems

source code:
arch/arm/mach-exynos/clock-exynos4.c