vboot_reference: Claim space for OOBE autoconfig public key

This commit claims a TPM space for a 33-byte P256 EC
compressed public key used in OOBE autoconfig validation.

BUG=chromium:793878
TEST=make runtests; precq
BRANCH=none

Change-Id: I12bf8243ceb2a0029b015964ea7a2ae2f56bb080
Reviewed-on: https://chromium-review.googlesource.com/1149073
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: Tudor Brindus <tbrindus@chromium.org>
Reviewed-by: Randall Spangler <rspangler@chromium.org>
1 file changed