CONFIG_S3C24XX_DMA is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

S3C2410 DMA support (deprecated)

modulename: dma.ko

configname: CONFIG_S3C24XX_DMA

Linux Kernel Configuration
└─>SAMSUNG S3C24XX SoCs Support
└─>S3C2410 DMA support (deprecated)
In linux kernel since version 3.1 (release Date: 2011-10-24)  
S3C2410 DMA support. This is needed for drivers like sound which
use the S3C2410's DMA system to move data to and from the
peripheral blocks.

source code:
selects
CONFIG_S3C_DMA


is selected by
CONFIG_S3C24XX_DMAC

is depended by
CONFIG_SND_S3C24XX_I2S