cam: Convert to pragma once

Remove the verbose #ifndef/#define/#endif pattern for maintaining
header idempotency, and replace it with a simple #pragma once.

This simplifies the headers, and prevents redundant changes when
header files get moved.

Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com>

1 files changed, 2 insertions, 4 deletions

diff --git a/src/cam/event_loop.h b/src/cam/event_loop.h
index 57bb6fb3..a4613eb2 100644
--- a/src/cam/event_loop.h
+++ b/src/cam/event_loop.h
@@ -4,8 +4,8 @@
  *
  * event_loop.h - cam - Event loop
  */
-#ifndef __CAM_EVENT_LOOP_H__
-#define __CAM_EVENT_LOOP_H__
+
+#pragma once
 
 #include <functional>
 #include <memory>
@@ -61,5 +61,3 @@ private:
 				     void *param);
 	void dispatchCall();
 };
-
-#endif /* __CAM_EVENT_LOOP_H__ */