spl: Remove NULL assignments in spl_load_info

Remove NULL assignments to fields in spl_load_info when .load doesn't
reference these fields. This can result in more efficient code. filename
must stay even if it is unused, since load_simple_fit uses it.

Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
6 files changed