Switch from include guard to pragma once.
This pragma is so widley supported it is a defacto standard. It has the
advantage over include guards in that a unique macro identifier does not
need to be created and maintained.
Change-Id: Id12f56d9970fdfb63d45c92e428d3dbe44b2ab0e
diff --git a/inc/hf/mm.h b/inc/hf/mm.h
index b62133c..c96e16a 100644
--- a/inc/hf/mm.h
+++ b/inc/hf/mm.h
@@ -1,5 +1,4 @@
-#ifndef _MM_H
-#define _MM_H
+#pragma once
#include <stdbool.h>
#include <stdint.h>
@@ -59,5 +58,3 @@
void *mm_identity_map(paddr_t begin, paddr_t end, int mode);
bool mm_unmap(paddr_t begin, paddr_t end, int mode);
void mm_defrag(void);
-
-#endif /* _MM_H */