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

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

source code: