update license header

drivers/arm/ws2812.h

@@ -1,12 +1,21 @@
 /*
- * LEDDriver.h
- *
- *  Created on: Aug 26, 2013
- *      Author: Omri Iluz
- */
+    Copyright (C) 2013 Omri Iluz
+                  2018 Jack Humbert
 
-#ifndef WS2812_H_
-#define WS2812_H_
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+*/
+
+#pragma once
 
 #include "hal.h"
 #include "rgblight_types.h"
@@ -33,5 +42,3 @@ void WS2812_init(void);
 void WS2812_set_color( int index, uint8_t red, uint8_t green, uint8_t blue );
 void WS2812_set_color_all( uint8_t red, uint8_t green, uint8_t blue );
 void WS2812_send_colors(void);
-
-#endif /* LEDDRIVER_H_ */

drivers/avr/ws2812.h

@@ -20,8 +20,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef LIGHT_WS2812_H_
-#define LIGHT_WS2812_H_
+#pragma once
 
 #include <avr/io.h>
 #include <avr/interrupt.h>
@@ -72,5 +71,3 @@ void ws2812_sendarray_mask(uint8_t *array,uint16_t length, uint8_t pinmask);
 #ifndef CONCAT_EXP
 #define CONCAT_EXP(a, b)   CONCAT(a, b)
 #endif
-
-#endif /* LIGHT_WS2812_H_ */