drm/xe: Fix xe_gsc.h

Prefer forward declaration over #include xe_gsc_types.h
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Francois Dugast <francois.dugast@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240521102828.668-3-michal.wajdeczko@intel.com

drivers/gpu/drm/xe/xe_gsc.h

@@ -6,8 +6,9 @@
 #ifndef _XE_GSC_H_
 #define _XE_GSC_H_
 
-#include "xe_gsc_types.h"
+#include <linux/types.h>
 
+struct xe_gsc;
 struct xe_gt;
 struct xe_hw_engine;