RALINK DMA support

modulename: ralink-gdma.ko

configname: CONFIG_DMA_RALINK

Linux Kernel Configuration
└─>Device Drivers
└─>Staging drivers
└─>RALINK DMA support
In linux kernel since version 4.2 (release Date: 2015-08-30)
source code:
drivers/staging/mt7621-dma/ralink-gdma.c