Code changes are necessary because `-Wformat` warns about empty format strings by default. Change-Id: Ic8021b70f4cd4875b06f196f88b84940c9a79fe0 Signed-off-by: Nico Huber <nico.h@gmx.de> Reviewed-on: https://review.coreboot.org/c/coreboot/+/75147 Reviewed-by: Jérémy Compostella <jeremy.compostella@intel.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>