Add more vboot_api_kernel tests

BUG=chromium-os:38139
BRANCH=none
TEST=make runtests && FEATURES=test emerge-daisy vboot_reference

Change-Id: Ib280b80ba707f8a2141d728f78ae296774b1301a
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/42669
7 files changed