Adding support for the Fonera Fon2303a Router to Gluon.
A large quantity has turned up for distribution in Freifunk groups and apart from not being able to IBSS mesh, they work perfectly on 802.11s mesh.
This still needs some work:
- there's no factory image causing `make images` to fail
- VoCore can not support BSS and IBSS at the same time
- multi-BSS mode (e.g. mesh + BSS) works if the macs only
differ in the last 3 bits. Gluon expects to choose both MACs freely,
though, so after flashing the image one should reset the wifi MACs.
This is further complicated as VoCores have their MACs assigned
without gaps making collisions likely.
- there are no buttons nor ethernet ports (without the dock, that is),
so config-mode will not be possible as is
