novena-hub: Rename to novena-usb-hub

Signed-off-by: Sean Cross <xobs@kosagi.com>
novena-usb-hub: Intermittent work to improve port naming

Signed-off-by: Sean Cross <xobs@kosagi.com>
novena-usb-hub: Work around crossed wires

Signed-off-by: Sean Cross <xobs@kosagi.com>
novena-usb-hub: Print out shorthand names

Signed-off-by: Sean Cross <xobs@kosagi.com>
novena-usb-hub: Update manpage to list new nomenclature

Signed-off-by: Sean Cross <xobs@kosagi.com>