message: Added missing description for PartitionedCall op
diff: @@ -20,4 +20,9 @@ op {
  END
  }
  summary: "returns `f(inputs)`, where `f`'s body is placed and partitioned."
  + description: <<END
  +Asynchronously executes a function, potentially across multiple devices but
  +within a single process. The kernel places and partitions a given function's
  +underlying graph, and executes each of the partitioned subgraphs as a function.
  +END
  }
  