If the `--help` argument is passed, print the usage and immediately
return. This avoids printing errors about 'invalid config,' which
users don't specify when getting the usage information, and potentially
printing the usage a second time before exiting.
Change-Id: I18bf154ff5177fa0e0aa6a41f0d71980fed7ce55
Signed-off-by: Benjamin Doron <benjamin.doron@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/87869
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Maximilian Brune <maximilian.brune@9elements.com>
Reviewed-by: Alicja Michalska <ahplka19@gmail.com>