defu convadd (#3479)

* fix bilinear_interp build err on mali,test=develop

* remove 256 enforce of in.. test=develop

* remove 256 enforce of in ,code style.. test=develop

* defu conv add ,test=develop

mobile/tools/op.cmake

@@ -442,9 +442,9 @@ endif()
 if (FILL_CONSTANT_OP)
   add_definitions(-DFILL_CONSTANT_OP)
 endif()
-if (FUSION_CONVADD_OP)
-  add_definitions(-DFUSION_CONVADD_OP)
-endif()
+# if (FUSION_CONVADD_OP)
+#   add_definitions(-DFUSION_CONVADD_OP)
+# endif()
 if (FUSION_CONVADDRELU_OP)
   add_definitions(-DFUSION_CONVADDRELU_OP)
 endif()