drm/xe: Update shared stats to use the new gem helper

Switch to using the new gem shared memory stats helper
rather than hand rolling it.

Link: https://lore.kernel.org/all/20231207180225.439482-1-alexander.deucher@amd.com/Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>

drivers/gpu/drm/xe/xe_drm_client.c

@@ -113,7 +113,7 @@ static void bo_meminfo(struct xe_bo *bo,
 	else
 		mem_type = XE_PL_TT;
 
-	if (bo->ttm.base.handle_count > 1)
+	if (drm_gem_object_is_shared_for_memory_stats(&bo->ttm.base))
 		stats[mem_type].shared += sz;
 	else
 		stats[mem_type].private += sz;