GLKRVP: Enable verified boot support
GLKRVP: Enable verified boot support

BUG=b:67780603
BRANCH=glkrvp
TEST=EC console command 'hash' can print the vboot hash
     calculated values.

Change-Id: I3d9efa7b6c57f8a862676929a1af9ae21b5c9b2d
Signed-off-by: Vijay Hiremath <006c712879a3af08bfdb5c2b8491a8b2d5fd73cd@intel.com>
Reviewed-on: https://chromium-review.googlesource.com/719881
Commit-Ready: Vijay P Hiremath <006c712879a3af08bfdb5c2b8491a8b2d5fd73cd@intel.com>
Tested-by: Vijay P Hiremath <006c712879a3af08bfdb5c2b8491a8b2d5fd73cd@intel.com>
Reviewed-by: Aaron Durbin <af0622ab041e8b0f8e5819838dcc93898196e71f@chromium.org>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec