Add vboot_reference-sys

This adds Rust bindings to vboot_reference.

BRANCH=none
BUG=b:214081328
TEST=cargo build

Change-Id: I4f9df36a0de93c0617ead2a75ef2ca5fcf8f5652
Signed-off-by: Allen Webb <allenwebb@google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/vboot_reference/+/3390514
Reviewed-by: Mike Frysinger <vapier@chromium.org>
9 files changed