vboot: fix two return values in vboot_api_stub.c

Also add the 2api.h include for vboot2-style stubs.

BUG=b:124141368
TEST=make clean && make runtests
BRANCH=none

Change-Id: Id6522ea139126adce6cee5ba225ab3eb78f31b7e
Signed-off-by: Joel Kitching <kitching@google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/vboot_reference/+/2218539
Reviewed-by: Joel Kitching <kitching@chromium.org>
Commit-Queue: Joel Kitching <kitching@chromium.org>
Tested-by: Joel Kitching <kitching@chromium.org>
1 file changed