gpu: ion: Add backwards compatibility ioctls

 * Backwards-compatibiity ioctls for pre-MR1 userspace
 * Original patch by Oliver Gjoneski (detule) for D2

Change-Id: Ica119c27df564a5975ecabc9c00859a9fa8b2d7c

 Author:    Steve Kondik <shade@chemlab.org>