x86: Allow builds without ACPI tables

Fix build bug that is referencing vboot_data from
vendorcode/google/chromeos/gnvs.c when CONFIG_HAVE_ACPI_TABLES is not
set.

BRANCH=none
BUG=None
TEST=Build and run on Glados
1. Checkout updated patches for config, skylake and glados through
FspNotify1
2. Verify that mainboard/intel/glados/Kconfig does not select
HAVE_ACPI_TABLES
3. emerge-glados  coreboot
4. Test passes if build completes successfully

Change-Id: Icac3845f7e2d1ddffa5f787a640033fba286c13e
Signed-off-by: Lee Leahy <Leroy.P.Leahy@intel.com>
Reviewed-on: https://chromium-review.googlesource.com/254360
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Commit-Queue: Leroy P Leahy <leroy.p.leahy@intel.com>
Tested-by: Leroy P Leahy <leroy.p.leahy@intel.com>
1 file changed