[LEDE-DEV] Mayor fix for Engenius ESR1750

[reiner otto]

There is a mayor bug in the image, built for Engenius ESR1750.
First remarks about it have been made here:
https://forum.openwrt.org/viewtopic.php?id=55246

I can confirm both bug and the fix proposed there.
In short, this has to be done/changed:

uci set network. at switch_vlan[0].ports='0t 1 2 3 4'
uci set network. at switch_vlan[1].ports='0t 5'


A developer, please, should take it into correct patch.