CONFIG_SH_DMA is not available for thedefaultarchitecture x86.
Result is shown for architecture sh

SuperH on-chip DMA controller (DMAC) support

modulename: dma-sh.ko

and/or

dma.ko

configname: CONFIG_SH_DMA

Linux Kernel Configuration
└─>DMA support
└─>SuperH on-chip DMA controller (DMAC) support
In linux kernel since version 2.6.12  
source code:
arch/sh/drivers/dma/dma-sh.c

is selected by
CONFIG_SH_DMAE_BASE