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

one more regression fix, partial revert.

* 'drm-fixes-4.1' of git://people.freedesktop.org/~agd5f/linux:
  drm/radeon: partially revert "fix VM_CONTEXT*_PAGE_TABLE_END_ADDR handling"