drm/i915: Don't use i915_preliminary_hw_support to mean pre-production

Those are two distinct concepts. Just use a comment to remind us to
remove that W/A at some point.

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
1 file changed