drm/i915: Apply i830 errata for cursor alignment
i830 requires 32bpp cursors to be aligned to 16KB, so we have to expose the alignment parameter to i915_gem_attach_phys_object(). Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk> Signed-off-by: NEric Anholt <eric@anholt.net>
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