drm/connector: move HDR sink metadata to display info

Information parsed from the display EDID should be stored in display
info. Move HDR sink metadata there.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20250519112900.1383997-1-jani.nikula@intel.com


Signed-off-by: Jani Nikula <jani.nikula@intel.com>