* Atmel Direct Memory Access Controller (DMA)

Required properties:
- compatible: Should be "atmel,<chip>-dma"
- reg: Should contain DMA registers location and length
- interrupts: Should contain DMA interrupt

Examples:

dma@ffffec00 {
	compatible = "atmel,at91sam9g45-dma";
	reg = <0xffffec00 0x200>;
	interrupts = <21>;
};