CONFIG_EXYNOS_DEV_DMA is not available for the selected architecture x86.
Result is shown for architecture arm
CONFIG_EXYNOS_DEV_DMA (not configurable)
modulename: dma.ko
configname: CONFIG_EXYNOS_DEV_DMA
Linux Kernel Configuration
└─>SAMSUNG EXYNOS SoCs Support
└─>EXYNOS_DEV_DMA
In linux kernel since version 3.1 (release Date: 2011-10-24)
Compile in amba device definitions for DMA controller