drm/i915: fix display info usage

Prefer DISPLAY_INFO() over INTEL_INFO()->display.

Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/a61f20726138b8eb77b02e0da70d831c297ab8aa.1687878757.git.jani.nikula@intel.com