Add recon functions of non-causal obmc

Change-Id: Id2537c8826e07ad6605aaa9858ba6d797bcd23a5

av1/common/reconinter.h

@@ -499,6 +499,10 @@ void av1_build_prediction_by_left_preds(const AV1_COMMON *cm, MACROBLOCKD *xd,
                                         int tmp_stride[MAX_MB_PLANE]);
 void av1_build_obmc_inter_predictors_sb(const AV1_COMMON *cm, MACROBLOCKD *xd,
                                         int mi_row, int mi_col);
+#if CONFIG_NCOBMC
+void av1_build_ncobmc_inter_predictors_sb(const AV1_COMMON *cm, MACROBLOCKD *xd,
+                                          int mi_row, int mi_col);
+#endif
 #endif  // CONFIG_MOTION_VAR
 
 #if CONFIG_EXT_INTER