Benjamin Berg authored Apr 22, 2020 and Benjamin Berg committed Jun 05, 2020

This is based on the patch and observation from Bastien that some
URU4000B devices do not use encryption by default (it is a configuration
stored within the firmware). As such, it makes sense to always detect
whether encryption is in use by inspecting the image.

The encryption option would disable flipping of the image for the
URU400B device. Retain this behaviour for backward compatibility.