Add crdev utility to platform/dev
Add crdev utility to platform/dev

BUG=chromium-os:21535
TEST=none

Change-Id: I39f7c73535a10891984c3951156e13a0ba18b431
Reviewed-on: https://gerrit.chromium.org/gerrit/11146
Tested-by: Steven Bennetts <d2bc269fbc7f1691ea11e20b3ea986cb219ed714@chromium.org>
Reviewed-by: Chris Sosa <959d3d631fb6f17f1b07f751372041a1edb210d1@chromium.org>
Commit-Ready: Steven Bennetts <d2bc269fbc7f1691ea11e20b3ea986cb219ed714@chromium.org>

mgireesh05/dev-util,marineam/coreos-dev-util,coreos/dev-util,marineam/coreos-dev-util,coreos/dev-util,mgireesh05/dev-util,mgireesh05/dev-util,coreos/dev-util