drm/i915: Split dp post_disable hooks

Split the post_disable hooks for DP to g4x and vlv variants. We'll
need another variant soon, so this should make it look a bit cleaner.

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>
1 file changed