ARM: dts: imx25: remove imx35-sdma compatible

The preloaded script addresses on imx25 and imx35 are different, so
imx25 is not compatible with imx35-sdma unless a custom firmware is
loaded.
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>

arch/arm/boot/dts/imx25.dtsi

@@ -453,7 +453,7 @@ gpio2: gpio@53fd0000 {
 			};
 
 			sdma: sdma@53fd4000 {
-				compatible = "fsl,imx25-sdma", "fsl,imx35-sdma";
+				compatible = "fsl,imx25-sdma";
 				reg = <0x53fd4000 0x4000>;
 				clocks = <&clks 112>, <&clks 68>;
 				clock-names = "ipg", "ahb";