message: re-add deprecation doxygen documentation
diff: @@ -326,6 +326,9 @@ protected:
  * `residual_norm` or the `residual` being set. When any of those is not
  * correctly provided, an exception ::gko::NotSupported() is thrown.
  *
  + * @deprecated Please use the class ResidualNorm with the factory parameter
  + * baseline = mode::initial_resnorm
  + *
  * @ingroup stop
  */
  template <typename ValueType = default_precision>
  @@ -380,6 +383,9 @@ protected:
  * right-hand side. If this is not correctly provided, an exception
  * ::gko::NotSupported() is thrown.
  *
  + * @deprecated Please use the class ResidualNorm with the factory parameter
  + * baseline = mode::rhs_norm
  + *
  * @ingroup stop
  */
  template <typename ValueType = default_precision>
  @@ -432,6 +438,9 @@ protected:
  * If this is not correctly provided, an exception ::gko::NotSupported()
  * is thrown.
  *
  + * @deprecated Please use the class ResidualNorm with the factory parameter
  + * baseline = mode::absolute
  + *
  * @ingroup stop
  */
  template <typename ValueType = default_precision>
  