ARM64: dts: marvell: cn9310: Add missing phy-mode

The DSA framework has got more picky about always having a phy-mode
for the CPU port. The SoC Ethernet is being configured to
10gbase-r. Set the switch phy-mode based on this. Additionally, the
SoC Ethernet is using in-band signalling to determine the link speed,
so add same parameter to the switch.

Additionally, the cpu label has never actually been used in the
binding, so remove it.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>

Author: lunn

arch/arm64/boot/dts/marvell/cn9130-crb.dtsi

@@ -282,8 +282,9 @@
 
 			port@a {
 				reg = <10>;
-				label = "cpu";
 				ethernet = <&cp0_eth0>;
+				phy-mode = "10gbase-r";
+				managed = "in-band-status";
 			};
 
 		};