soc/intel/cannonlake: Set DIMM_SPD_SIZE to 512

All related mainboards are setting DIMM_SPD_SIZE to 512. Therefore,
default to 512 in the SoC Kconfig and drop it from related mainboard
Kconfigs.

Change-Id: Idb6a0e42961eeb490afd76b4aa7d940961991733
Signed-off-by: Felix Singer <felixsinger@posteo.net>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/52513
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

0 files changed, 0 insertions, 0 deletions