ARM: dts: imx53: Add DMA configuration for UART

In order to use sdma with UART, we need to add DMA configuration in device tree.

Signed-off-by: Fabien Lahoudere <[e-mail]>
Signed-off-by: Shawn Guo <[e-mail]>

arch/arm/boot/dts/imx53.dtsi

···
 					clocks = <&clks IMX5_CLK_UART3_IPG_GATE>,
 					         <&clks IMX5_CLK_UART3_PER_GATE>;
 					clock-names = "ipg", "per";
+					dmas = <&sdma 42 4 0>, <&sdma 43 4 0>;
+					dma-names = "rx", "tx";
 					status = "disabled";
 				};
 
···
 				clocks = <&clks IMX5_CLK_UART1_IPG_GATE>,
 				         <&clks IMX5_CLK_UART1_PER_GATE>;
 				clock-names = "ipg", "per";
+				dmas = <&sdma 18 4 0>, <&sdma 19 4 0>;
+				dma-names = "rx", "tx";
 				status = "disabled";
 			};
 
···
 				clocks = <&clks IMX5_CLK_UART2_IPG_GATE>,
 				         <&clks IMX5_CLK_UART2_PER_GATE>;
 				clock-names = "ipg", "per";
+				dmas = <&sdma 12 4 0>, <&sdma 13 4 0>;
+				dma-names = "rx", "tx";
 				status = "disabled";
 			};
 
···
 				clocks = <&clks IMX5_CLK_UART4_IPG_GATE>,
 				         <&clks IMX5_CLK_UART4_PER_GATE>;
 				clock-names = "ipg", "per";
+				dmas = <&sdma 2 4 0>, <&sdma 3 4 0>;
+				dma-names = "rx", "tx";
 				status = "disabled";
 			};
 		};
···
 				clocks = <&clks IMX5_CLK_UART5_IPG_GATE>,
 				         <&clks IMX5_CLK_UART5_PER_GATE>;
 				clock-names = "ipg", "per";
+				dmas = <&sdma 16 4 0>, <&sdma 17 4 0>;
+				dma-names = "rx", "tx";
 				status = "disabled";
 			};