[llvm][ir] Add missing license to ProfDataUtils

[paulkirth]

Summary

We failed to add these in D128860 or D128858

[davidxl]

lgtm

llvm/include/llvm/IR/ProfDataUtils.h

+//===- llvm/IR/ProfDataUtils.h - Profiling Metadata Utilities ---*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+/// @file
+/// This file contains the declarations for profiling metadata utility
+/// functions.
+//
+//===----------------------------------------------------------------------===//
+
 #ifndef LLVM_IR_PROFDATAUTILS_H
 #define LLVM_IR_PROFDATAUTILS_H
 
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/Twine.h"
 #include "llvm/IR/Metadata.h"
 
 namespace llvm {

llvm/lib/IR/ProfDataUtils.cpp

+//===- ProfDataUtils.cpp - Utility functions for MD_prof Metadata ---------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements utilities for working with Profiling Metadata.
+//
+//===----------------------------------------------------------------------===//
+
 #include "llvm/IR/ProfDataUtils.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/Twine.h"
 #include "llvm/IR/Constants.h"
 #include "llvm/IR/Function.h"
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/LLVMContext.h"
 #include "llvm/IR/Metadata.h"