gollvm: copyright cleanup for driver-main subdir

Insure that files have the proper copyright notice.

Change-Id: I4e2e57a0daecd1913371874009825061373522e0
Reviewed-on: https://go-review.googlesource.com/120038
Reviewed-by: Ian Lance Taylor <iant@golang.org>
diff --git a/driver-main/llvm-goc.cpp b/driver-main/llvm-goc.cpp
index d7ac106..f03eced 100644
--- a/driver-main/llvm-goc.cpp
+++ b/driver-main/llvm-goc.cpp
@@ -1,9 +1,8 @@
 //===-- llvm-goc.cpp - compiler driver for gollvm  ------------------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
 //
 //===----------------------------------------------------------------------===//
 //