message: Update mul quant spec
diff: @@ -223,6 +223,10 @@ MUL
  data_type : int8
  range : [-128, 127]
  granularity: per-tensor
  + Input 1:
  + data_type : int8
  + range : [-128, 127]
  + granularity: per-tensor
  Output 0:
  data_type : int8
  range : [-128, 127]
  