[display] Add __BEGIN_CDECLS

include/dev/display.h

 /*
  * Copyright (c) 2008-2010 Travis Geiselbrecht
  *
  * Permission is hereby granted, free of charge, to any person obtaining
  * a copy of this software and associated documentation files
  * (the "Software"), to deal in the Software without restriction,
  * including without limitation the rights to use, copy, modify, merge,
  * publish, distribute, sublicense, and/or sell copies of the Software,
  * and to permit persons to whom the Software is furnished to do so,
  * subject to the following conditions:
  *
  * The above copyright notice and this permission notice shall be
  * included in all copies or substantial portions of the Software.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
  * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
 #ifndef __DEV_DISPLAY_H
 #define __DEV_DISPLAY_H
 
 #include <stdbool.h>
 #include <sys/types.h>
 #include <inttypes.h>
+#include <compiler.h>
+
+__BEGIN_CDECLS
 
 int display_init(void *framebuffer);
 int display_enable(bool enable);
 void display_pre_freq_change(void);
 void display_post_freq_change(void);
 
 #define DISPLAY_FORMAT_NONE         (-1)
 #define DISPLAY_FORMAT_RGB_565      (0)
 #define DISPLAY_FORMAT_RGB_332      (1)
 #define DISPLAY_FORMAT_RGB_2220     (2)
 #define DISPLAY_FORMAT_ARGB_8888    (3)
 #define DISPLAY_FORMAT_RGB_x888     (4)
 #define DISPLAY_FORMAT_MONO_1       (5)
 #define DISPLAY_FORMAT_MONO_8       (6)
 
 struct display_info {
     void *framebuffer;
     int format;
     uint width;
     uint height;
     uint stride;
 
     // Update function
     void (*flush)(uint starty, uint endy);
 };
 
 status_t display_get_info(struct display_info *info);
 
+__END_CDECLS
+
 #endif