util/ifdtool: Fix argument parsing for layout/validate

When `mode_validate` was added, a second copy of `mode_layout` was
accidentally added to the multiple-mode-argument check instead. This
prevents `-f` from working. Fix the check to reference the correct
variable.

Change-Id: Ibac6f090550ff63ec9158355b0450da204a300a7
Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36049
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>

0 files changed, 0 insertions, 0 deletions