ARM: at91: dts: set #dma-cells to the correct value

Moving to generic DMA DT binding involves to set #dma-cells to 2.

Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
diff --git a/arch/arm/boot/dts/sama5d3.dtsi b/arch/arm/boot/dts/sama5d3.dtsi
index 39b0458..95c00a3 100644
--- a/arch/arm/boot/dts/sama5d3.dtsi
+++ b/arch/arm/boot/dts/sama5d3.dtsi
@@ -348,14 +348,14 @@
 				compatible = "atmel,at91sam9g45-dma";
 				reg = <0xffffe600 0x200>;
 				interrupts = <30 4 0>;
-				#dma-cells = <1>;
+				#dma-cells = <2>;
 			};
 
 			dma1: dma-controller@ffffe800 {
 				compatible = "atmel,at91sam9g45-dma";
 				reg = <0xffffe800 0x200>;
 				interrupts = <31 4 0>;
-				#dma-cells = <1>;
+				#dma-cells = <2>;
 			};
 
 			ramc0: ramc@ffffea00 {