Ensure that firmware provides are legal GUIDs
Ensure that firmware provides are legal GUIDs

If they are raw device strings, e.g. 'USB\VID_046D&PID_AAAC' just fix them
in-place.

hughsie/fwupd,hughsie/fwupd,vathpela/fwupd,fwupd/fwupd,vathpela/fwupd,hughsie/fwupd,vathpela/fwupd,hughsie/fwupd,fwupd/fwupd,superm1/fwupd,superm1/fwupd,fwupd/fwupd,fwupd/fwupd,vathpela/fwupd,superm1/fwupd