The odu-gpiotool is a small script created by roh to selectively reset
individual peripherals of the system by the administrator. It originates
from ticket https://projects.sysmocom.de/ortelius/issues/655
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.
Harald Welte
Holger Hans Peter Freyther
Henning Heinold