Hi Arne,
That was me I am afraid. I remember seeing all the text files in the rootfile and thought that those are not firmware files and so would not be needed.
Obviously my assumption about those files not being needed was very wrong.
I will make sure not to do the same thing again.
It should be unlikely to happen again as @Michael has added the find-linux-firmware-changes tool to the system now which should help make sure I don't remove needed files.
Apologies for my error. I hope it didn't cause you too many problems with the builds and testing before you discovered it.
Regards,
Adolf.