This script may be generalized to check other files that need lists of
current options. But for now, the script just checks
`scripts/data_files/config-options-current.txt`.
This script is identical to the file in crypto. If the file grows to support
multiple targets, we'll probably want to split it, with a generic part in
the framework and a project-specific part (probably little more than the
list of targets) in each project. But for now the file is too simple to split.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>