OpenEmbedded "poky" with some sysmocom specific modifications. Mostly used only up to sysmocom release 201310, but the "pyro" branch is still used for 201705
We use the new sysfs file to obtain the board version number and
configure the port swapping accordingly. If the board_version sysfs
attribute is not present, we default to v2.
We also integrate resetting the hub chip from within this tool right
befeore writing the new register values via I2C.