Use already defined macros in `spd.h`, ddr3.h`and `ddr4.h`.
TEST=Built google/cyan (Cyan) with BUILD_TIMELESS=1, no change in output
ROM.
Change-Id: I727aa38236ad97f9c529389fdb7d7d11c1db08d0
Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/82314
Reviewed-by: Martin L Roth <gaumless@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>