drm/i915: enable atomic fb-helper

i915 supports enough atomic to have atomic fb-helper paths, even though
it does not yet advertise DRIVER_ATOMIC.

Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Rob Clark 2015-08-25 15:36:00 -04:00 • committed by Daniel Vetter
commit 28cc504e8d