linux-wandboard

drm/i915: set ring->size in common ring setup code

Eventually we want to scale the ring size depending upon available
gtt space. For now just consolidate this instead of replicating it
over all ringbuffer templates.

Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>