Add support for nvidia shieldtablet (wifi only)

Change-Id: Iea95fe8eb892cfd566b413be3d107f2c68cb51e7
Move quickboot to vendor vanir

If your going to force it on us don't make us sync vendor samsung
when we don't need it.

Change-Id: I9217f99f69c743c2e2afc5c6f6f40ec89424e4e0