Backmerge drm-fixes merge into drm-next

Commit '6f6a73c8b715d595977774d48450a734297ab21f' from Linus' tree

The fixes reverts cause a bit of a conflict pain with intel next,
start fixing it up here.

Signed-off-by: Dave Airlie <airlied@redhat.com>

diff --cc drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
Simple merge