Move STRINGIFY() from coreboot string.h to commonlib/bsd/helpers.h
Remove redundant defines from libpayload.h and libpayloads' standard
headers.
Signed-off-by: Jakub Czapiga <jacz@semihalf.com>
Change-Id: I3263b2aa7657759207bf6ffda750d839e741f99c
Reviewed-on: https://review.coreboot.org/c/coreboot/+/62921
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>