Add init extension library for s1boot version

* Set ro.boot.s1boot to oemandroidboot.s1boot=<value> from cmdline

Change-Id: I341184820096a06fbc696ab503678f7ae705b8bb
rhine: add radish blob

Change-Id: I7d697f048056a3e9f87927c442e39c78d725a9ad