drm/i915: Abstract display info away during probe

The goal is to have this function ready for Xe to use
directly. So, let's use the available macro.

Cc: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230929205023.1202735-1-rodrigo.vivi@intel.com

drivers/gpu/drm/i915/display/intel_display_device.c

@@ -926,7 +926,7 @@ void intel_display_device_probe(struct drm_i915_private *i915)
 	else
 		info = probe_display(i915);
 
-	i915->display.info.__device_info = info;
+	DISPLAY_INFO(i915) = info;
 
 	memcpy(DISPLAY_RUNTIME_INFO(i915),
 	       &DISPLAY_INFO(i915)->__runtime_defaults,