dt-bindings: net: dsa: b53: Specify unit address in hex

The unit address should be 1e, because the unit address is supposed
to be in hexadecimal.
Suggested-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Kurt Kanzenbach <kurt@linutronix.de>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Documentation/devicetree/bindings/net/dsa/b53.txt

@@ -104,7 +104,7 @@ Ethernet switch connected via MDIO to the host, CPU port wired to eth0:
 		#address-cells = <1>;
 		#size-cells = <0>;
 
-		switch0: ethernet-switch@30 {
+		switch0: ethernet-switch@1e {
 			compatible = "brcm,bcm53125";
 			reg = <30>;
 			#address-cells = <1>;