Add another missing file header

Bug: 364634028
Change-Id: Id26a236e3cc74944111f1ce74e32dbb481c4b309
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/74829
Auto-Submit: David Benjamin <[email protected]>
Commit-Queue: Adam Langley <[email protected]>
Reviewed-by: Adam Langley <[email protected]>
Commit-Queue: David Benjamin <[email protected]>

Author: davidben

util/WORKSPACE.toplevel

@@ -1,3 +1,17 @@
+# Copyright 2023 The BoringSSL Authors
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+# SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+# OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+# CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
 workspace(name = "boringssl")
 
 load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")