arm64: dts: microchip: sparx5: fix mdio reg

Correct the reg address of mdio node to match unit address.  Assume the
reg is not correct and unit address was correct, because there is
already node using the existing reg 0x110102d4.

  sparx5.dtsi:443.25-451.5: Warning (simple_bus_reg): /axi@600000000/mdio@6110102f8: simple-bus unit address format error, expected "6110102d4"

Fixes: d0f482b ("arm64: dts: sparx5: Add the Sparx5 switch node")
Reviewed-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Steen Hegelund <Steen.Hegelund@microchip.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>

Author: krzk

arch/arm64/boot/dts/microchip/sparx5.dtsi

@@ -447,7 +447,7 @@
 			pinctrl-names = "default";
 			#address-cells = <1>;
 			#size-cells = <0>;
-			reg = <0x6 0x110102d4 0x24>;
+			reg = <0x6 0x110102f8 0x24>;
 		};
 
 		mdio3: mdio@61101031c {