Add ENV_STAGE_SUPPORTS_SMP to clean up spinlock stubs

CONFIG(SMP) was an invalid condition to use in cases where one
stage requires spinlocks and another one does not. The
stage not requiring spinlock still required <smp/spinlock.h>
to be implemented with no-op stubs.

This reverts commit 037ee4b556
  soc/amd/picasso: Add dummy spinlock for psp_verstage

Change-Id: Iba52febdeee78294f916775ee9ce8a82d6203570
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/59094
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>

0 files changed, 0 insertions, 0 deletions