CONFIG_S3C2410_DMA is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

CONFIG_S3C2410_DMA (not configurable)

modulename: dma-s3c2410.ko

configname: CONFIG_S3C2410_DMA

Linux Kernel Configuration
└─>SAMSUNG S3C24XX SoCs Support
└─>S3C2410_DMA
In linux kernel since version 2.6.12  
DMA device selection for S3C2410 and compatible CPUs

source code: