sdm: Add avoid_refresh flag to CwbConfig

Change-Id: I235594fd279a61989d344d8fe78c957721910b41
diff --git a/sdm/include/core/layer_buffer.h b/sdm/include/core/layer_buffer.h
index ab94535..ac7a6eb 100644
--- a/sdm/include/core/layer_buffer.h
+++ b/sdm/include/core/layer_buffer.h
@@ -370,6 +370,9 @@
   LayerRect cwb_full_rect = {};                      //!< Same as Output buffer Rect (unaligned).
   CwbTapPoint tap_point = CwbTapPoint::kLmTapPoint;  //!< Client specified tap point for CWB.
   void *dither_info = nullptr;                       //!< Pointer to the cwb dither setting.
+  bool avoid_refresh = false;                        //!< Whether to avoid additional refresh for
+                                                     //!< CWB Request, by default refresh occurs
+                                                     //!< for each CWB request to process it.
 };
 
 class LayerBufferObject {