vboot_reference: Install vboot_host.pc file

Since we are going to pull in libmtdutils, it would be nice to let
downstream packages automatically query for appropriate linking flags.

BUG=chromium:459338
BRANCH=None
CQ-DEPEND=CL:250836
TEST=See the depending CL.

Change-Id: I9ff8046b95e1d7e909a483fe87a69d460777e192
Reviewed-on: https://chromium-review.googlesource.com/250530
Commit-Queue: Nam Nguyen <namnguyen@chromium.org>
Trybot-Ready: Nam Nguyen <namnguyen@chromium.org>
Tested-by: Nam Nguyen <namnguyen@chromium.org>
Reviewed-by: Nam Nguyen <namnguyen@chromium.org>
2 files changed