tree-wide: add license identifier for StackOverflow code

dlech · dlech · commit e178c85aae12 · 2020-11-20T11:04:36.000-06:00
https://stackoverflow.com/help/licensing
diff --git a/pybricks/util_mp/pb_kwarg_helper.h b/pybricks/util_mp/pb_kwarg_helper.h
@@ -1,4 +1,5 @@
 // SPDX-License-Identifier: MIT
+// SPDX-License-Identifier: CC-BY-SA-4.0
 // Copyright (c) 2018-2020 The Pybricks Authors
 
 #ifndef PYBRICKS_INCLUDED_PBKWARG_H
diff --git a/tools/checksum.py b/tools/checksum.py
@@ -1,6 +1,7 @@
 #!/usr/bin/env python3
 
 # SPDX-License-Identifier: MIT
+# SPDX-License-Identifier: CC-BY-SA-4.0
 # Copyright (c) 2019-2020 The Pybricks Authors
 
 """Calculate checksum of firmware file in the same way that the bootloader on

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,5 @@`
`1`	`1`	`// SPDX-License-Identifier: MIT`
	`2`	`+// SPDX-License-Identifier: CC-BY-SA-4.0`
`2`	`3`	`// Copyright (c) 2018-2020 The Pybricks Authors`
`3`	`4`
`4`	`5`	`#ifndef PYBRICKS_INCLUDED_PBKWARG_H`