arm64: dts: marvell: disable the mdio nodes by default

Disable the mdio nodes by default in the cp110 slave and master dtsi as
they're not wired on every board.
Signed-off-by: NAntoine Tenart <antoine.tenart@free-electrons.com>
Signed-off-by: NGregory CLEMENT <gregory.clement@free-electrons.com>

arch/arm64/boot/dts/marvell/armada-cp110-master.dtsi

@@ -95,6 +95,7 @@
 				compatible = "marvell,orion-mdio";
 				reg = <0x12a200 0x10>;
 				clocks = <&cpm_syscon0 1 9>, <&cpm_syscon0 1 5>;
+				status = "disabled";
 			};
 
 			cpm_syscon0: system-controller@440000 {

arch/arm64/boot/dts/marvell/armada-cp110-slave.dtsi

@@ -102,6 +102,7 @@
 				compatible = "marvell,orion-mdio";
 				reg = <0x12a200 0x10>;
 				clocks = <&cps_syscon0 1 9>, <&cps_syscon0 1 5>;
+				status = "disabled";
 			};
 
 			cps_syscon0: system-controller@440000 {