soc/intel/cannonlake: Allow coreboot to reserve stack for fsp
FSP BIOS 212 / 07.00.6C.40 for CNL/WHL supports FSP to use coreboot stack.
This change selects common stack config, that enables coreboot to support
share stack with FSP.
TEST=Boot to OS on WHL platform
Change-Id: I0778ee21cb4f66b8ec884b77788c05a73c609be6
Signed-off-by: Bora Guvendik <bora.guvendik@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33746
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-by: Aamir Bohra <aamir.bohra@intel.com>