uprev_firmware.sh: move to contrib

This code isn't supported by the build team, so move it to contrib/.

BUG=None
TEST=None

Change-Id: Ia9931444f2974b83c52eaa362ee32bd7de0bf4e0
Reviewed-on: https://chromium-review.googlesource.com/1178333
Commit-Ready: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Philip Chen <philipchen@chromium.org>
1 file changed