Update Makefile.inc so as to add the SPD data when needed. Tested
building other variants, no spd.bin gets added because they don't select
GENERIC_SPD_BIN.
Tested with BUILD_TIMELESS=1, binary does not change.
Change-Id: I0cda3f839baa227ce6a4b8f0510934125e5afb59
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38096
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
ba9e482a36