OpenEmbedded "poky" with some sysmocom specific modifications. Mostly used only up to sysmocom release 201310, but the "pyro" branch is still used for 201705
* add interface for connection to Inmarsat
* remove 'br0' and work directly with 'eth2' instead, to avoid bridges
in vlans of bridges
* bridge the video LAN also into the backbone (for later break-out)