arch/x86: Share storage data structures between early stages

Define a common area in CAR so that the storage data structures can be
shared between stages.

TEST=Build and run on Reef

Change-Id: I20a01b850a31df9887a428bf07ca476c8410d33e
Signed-off-by: Lee Leahy <Leroy.P.Leahy@intel.com>
Reviewed-on: https://review.coreboot.org/19300
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Sumeet R Pawnikar <sumeet.r.pawnikar@intel.com>
1 file changed