drm/i915/tc: convert intel_tc.c to struct intel_display

Going forward, struct intel_display is the main display device data
pointer. Convert intel_tc.c to struct intel_display.

Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://lore.kernel.org/r/bbff21269f348ac72eb749b6cf3f692234bed9f2.1742554320.git.jani.nikula@intel.com


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