arm: allwinner: Correct unit name in devicetree binding example

Unit-names must not start with a leading 0.
Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

Documentation/devicetree/bindings/dma/sun6i-dma.txt

@@ -18,7 +18,7 @@ Required properties:
 - #dma-cells :	Should be 1, a single cell holding a line request number
 
 Example:
-	dma: dma-controller@01c02000 {
+	dma: dma-controller@1c02000 {
 		compatible = "allwinner,sun6i-a31-dma";
 		reg = <0x01c02000 0x1000>;
 		interrupts = <0 50 4>;