Move display PPS related members under drm_i915_private display
sub-struct.
Signed-off-by: NJani Nikula <jani.nikula@intel.com>
Reviewed-by: NArun R Murthy <arun.r.murthy@intel.com>
Reviewed-by: NLucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/7ecc37045ab9eb22831517e5a59ca74edb31962f.1661346845.git.jani.nikula@intel.com