ARM: dts: sun8i: v3s: enable emac for zero Dock

dwmac-sun8i supports v3s and
Licheepi-zero Dock provides an ethernet port
furthermore, align nodes in alphabetical order

Signed-off-by: Andreas Rehn <rehn.andreas86@gmail.com>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20210525173159.183415-1-rehn.andreas86@gmail.com