drm/i915: Kill pipestat[] cache

Caching the PIPESTAT enable bits has been deemed pointless. Just
read them from the register itself.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2 files changed