gn2bp: update year in license of generated bp file

Test: n/a
Change-Id: I5eaa337181cc2054062d368d3286809477631720
diff --git a/tools/gn2bp/gen_android_bp b/tools/gn2bp/gen_android_bp
index ed4a412..8d86111 100755
--- a/tools/gn2bp/gen_android_bp
+++ b/tools/gn2bp/gen_android_bp
@@ -1081,7 +1081,7 @@
     create_proto_group_modules(blueprint, gn, l_name, t_names)
 
   output = [
-      """// Copyright (C) 2017 The Android Open Source Project
+      """// Copyright (C) 2022 The Android Open Source Project
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.