utility: Change autoupdate toolkits to statically linked.

Utilities shared by auto update programs (ex, firmware updater) must be
statically linked.

BUG=chrome-os-partner:11630
TEST=emerge-link vboot_reference

Change-Id: I74f7ad9f365005624f55cc3fcfc8dc31de0d69c2
Reviewed-on: https://gerrit.chromium.org/gerrit/28365
Tested-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-by: Che-Liang Chiou <clchiou@chromium.org>
Commit-Ready: Hung-Te Lin <hungte@chromium.org>
1 file changed