drm/i915: reduce includes in intel_connector.h

Only include what's needed.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/3aa1e27284e0ac308938978ae7da9ea9fbacad9e.1667383630.git.jani.nikula@intel.com

drivers/gpu/drm/i915/display/intel_connector.h

@@ -6,7 +6,7 @@
 #ifndef __INTEL_CONNECTOR_H__
 #define __INTEL_CONNECTOR_H__
 
-#include "intel_display.h"
+#include <linux/types.h>
 
 struct drm_connector;
 struct edid;