Added the SPDX identifier

rajkan01 · Nir Sonnenschein · commit 67da3a58f6c1 · 2019-03-25T14:23:14.000+02:00
diff --git a/targets/TARGET_NUVOTON/TARGET_M451/watchdog_api.c b/targets/TARGET_NUVOTON/TARGET_M451/watchdog_api.c
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2017-2018 Nuvoton
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

Original file line number	Diff line number	Diff line change
`@@ -1,5 +1,6 @@`
`1`	`1`	`/* mbed Microcontroller Library`
`2`	`2`	`* Copyright (c) 2017-2018 Nuvoton`
	`3`	`+ * SPDX-License-Identifier: Apache-2.0`
`3`	`4`	`*`
`4`	`5`	`* Licensed under the Apache License, Version 2.0 (the "License");`
`5`	`6`	`* you may not use this file except in compliance with the License.`