[includes] replace header guards with #pragma once

platform/armemu/include/platform/armemu.h

@@ -5,8 +5,7 @@
  * license that can be found in the LICENSE file or at
  * https://opensource.org/licenses/MIT
  */
-#ifndef __PLATFORM_ARMEMU_H
-#define __PLATFORM_ARMEMU_H
+#pragma once
 
 #include <platform/armemu/memmap.h>
 
@@ -18,5 +17,3 @@ void debug_dump_memory_words(void *mem, int len);
 
 void debug_set_trace_level(int trace_type, int level);
 
-#endif
-

platform/armemu/include/platform/armemu/memmap.h

@@ -5,8 +5,7 @@
  * license that can be found in the LICENSE file or at
  * https://opensource.org/licenses/MIT
  */
-#ifndef __MEMMAP_H
-#define __MEMMAP_H
+#pragma once
 
 #define MEMBANK_SIZE (4*1024*1024)
 
@@ -157,4 +156,3 @@
 #define BDEV_CMD_ERR_GENERAL (1 << BDEV_CMD_ERRSHIFT)
 #define BDEV_CMD_ERR_BAD_OFFSET (2 << BDEV_CMD_ERRSHIFT)
 
-#endif

platform/armemu/platform_p.h

@@ -5,13 +5,10 @@
  * license that can be found in the LICENSE file or at
  * https://opensource.org/licenses/MIT
  */
-#ifndef __PLATFORM_P_H
-#define __PLATFORM_P_H
+#pragma once
 
 void platform_init_interrupts(void);
 void platform_init_timer(void);
 void platform_init_blkdev(void);
 void platform_init_display(void);
 
-#endif
-