drm/amdgpu: fix unnecessary wake up

decrease CPU extra overhead.

Signed-off-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
Reviewed-by: Christian K?nig <christian.koenig@amd.com>
diff --git a/drivers/gpu/drm/amd/scheduler/gpu_scheduler.h b/drivers/gpu/drm/amd/scheduler/gpu_scheduler.h
index 5e35018..47823b4 100644
--- a/drivers/gpu/drm/amd/scheduler/gpu_scheduler.h
+++ b/drivers/gpu/drm/amd/scheduler/gpu_scheduler.h
@@ -54,6 +54,7 @@
 	bool                            is_pending;
 	uint64_t                        fence_context;
 	char                            name[20];
+	bool                            need_wakeup;
 };
 
 /**