Provide an empty 'ports' container node with the correct #address-cells
and #size-cells properties. This silences the following warning:
arch/arm/boot/dts/bcm4708-asus-rt-ac56u.dt.yaml:
ethernet-switch@
18007000: 'oneOf' conditional failed, one must be fixed:
'ports' is a required property
'ethernet-ports' is a required property
From schema:
Documentation/devicetree/bindings/net/dsa/b53.yaml
Acked-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>