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

CONFIG_SH_DMA_API (not configurable)

modulename: dma-api.ko

and/or

dma-sh.ko

configname: CONFIG_SH_DMA_API

Linux Kernel Configuration
└─>DMA support
└─>SH_DMA_API
In linux kernel since version 2.6.22 (release Date: 2007-07-08)  
source code:
/arch/sh/drivers/dma/
depends
 or CONFIG_SH_DMA

is selected by
CONFIG_SH_DMAE_BASE

is depended by
CONFIG_SH_DMA
CONFIG_G2_DMA