Add an entry flag called 'preserve' to indicate that an entry should be
preserved by firmware updates. Propagate this to FMAP too.
Signed-off-by: Simon Glass <sjg@chromium.org>
We now have 99 tests. Before adding any more, rename everything to three
digits. This helps to preserve the ordering of tests and makes it easier
to find things.
Signed-off-by: Simon Glass <sjg@chromium.org>