The *_UBIFS_OPTS variables need to be prefixed with DEVICE_ to match
the profile name.
The conditions need to be evaluated after the *_UBIFS_OPTS are set,
otherwise the variables are always empty.
Do not append or pass the DEVICE_ prefixed profile name to the images.
Use the name that is passed by the Image/Build/Profile/ step.
Signed-off-by: Mathias Kresin <dev@kresin.me>