The DSA framework has got more picky about always having a phy-mode
for the CPU port. The imx8mq Ethernet is being configured to RMII. Set
the switch phy-mode based on this.
Additionally, the cpu label has never actually been used in the
binding, so remove it.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
 
                                port@2 {
                                        reg = <2>;
-                                       label = "cpu";
+                                       phy-mode = "rev-rmii";
                                        ethernet = <&fec1>;
 
                                        fixed-link {