ARM: dts: imx: use generic DMA bindings for SSI nodes

Updates SSI nodes to adopt generic DMA bindings.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

arch/arm/boot/dts/imx53.dtsi

@@ -153,6 +153,9 @@
 					reg = <0x50014000 0x4000>;
 					interrupts = <30>;
 					clocks = <&clks 49>;
+					dmas = <&sdma 24 1 0>,
+					       <&sdma 25 1 0>;
+					dma-names = "rx", "tx";
 					fsl,fifo-depth = <15>;
 					fsl,ssi-dma-events = <25 24 23 22>; /* TX0 RX0 TX1 RX1 */
 					status = "disabled";
@@ -1050,6 +1053,9 @@
 				reg = <0x63fcc000 0x4000>;
 				interrupts = <29>;
 				clocks = <&clks 48>;
+				dmas = <&sdma 28 0 0>,
+				       <&sdma 29 0 0>;
+				dma-names = "rx", "tx";
 				fsl,fifo-depth = <15>;
 				fsl,ssi-dma-events = <29 28 27 26>; /* TX0 RX0 TX1 RX1 */
 				status = "disabled";
@@ -1074,6 +1080,9 @@
 				reg = <0x63fe8000 0x4000>;
 				interrupts = <96>;
 				clocks = <&clks 50>;
+				dmas = <&sdma 46 0 0>,
+				       <&sdma 47 0 0>;
+				dma-names = "rx", "tx";
 				fsl,fifo-depth = <15>;
 				fsl,ssi-dma-events = <47 46 45 44>; /* TX0 RX0 TX1 RX1 */
 				status = "disabled";