Merge branch 'drm-next-4.1' of git://people.freedesktop.org/~agd5f/linux into drm-next

Some final bits for 4.1.  Some fixes for userptrs and allow a new
packet for VCE to enable some new features in mesa.

* 'drm-next-4.1' of git://people.freedesktop.org/~agd5f/linux:
  drm/radeon: allow creating overlapping userptrs
  drm/radeon: add userptr config option
  drm/radeon: add video usability info support for VCE