This adds an emac node to the orangepi-2 dts (not yet merged upstream,
but in u-boot we already have emac support); fixes the alphetically
sorting of nodes in sun8i-h3-orangepi-plus.dts and disables some
usb controllers in sun8i-h3-orangepi-plus.dts which are only used
on the plus2e, as upstream has decided to do a separate dts files
for the plus2e.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>