Check CBFS for 'serial_number' field, and use value if exists;
otherwise use value set at compile time.
Change-Id: I4b50f6310ca32b9dd372db075a5b5729e3b06619
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Signed-off-by: Youness Alaoui <youness.alaoui@puri.sm>
Reviewed-on: https://review.coreboot.org/22040
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
c0a32cad28