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

SH7760 DMABRG support

modulename: dmabrg.ko

configname: CONFIG_SH_DMABRG

Linux Kernel Configuration
└─>DMA support
└─>SH7760 DMABRG support
In linux kernel since version 2.6.22 (release Date: 2007-07-08)  
The DMABRG does data transfers from main memory to Audio/USB units
of the SH7760.
Say Y if you want to use Audio/USB DMA on your SH7760 board.

source code: