ARM: dts: imx: add #dma-cells property for sdma

Add the #dma-cells property for all the sdma in all the imx platforms.

Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
diff --git a/arch/arm/boot/dts/imx6qdl.dtsi b/arch/arm/boot/dts/imx6qdl.dtsi
index 799cd1c..98ab31c 100644
--- a/arch/arm/boot/dts/imx6qdl.dtsi
+++ b/arch/arm/boot/dts/imx6qdl.dtsi
@@ -599,6 +599,7 @@
 				interrupts = <0 2 0x04>;
 				clocks = <&clks 155>, <&clks 155>;
 				clock-names = "ipg", "ahb";
+				#dma-cells = <3>;
 				fsl,sdma-ram-script-name = "imx/sdma/sdma-imx6q.bin";
 			};
 		};