Add header guards.
Change-Id: Ia5056080391a4dae7e12e53fd97c9cc1b3452874
diff --git a/libupgrade/hmx_upgrade_nvram.h b/libupgrade/hmx_upgrade_nvram.h
index 6cf834c..b0f8588 100644
--- a/libupgrade/hmx_upgrade_nvram.h
+++ b/libupgrade/hmx_upgrade_nvram.h
@@ -32,6 +32,8 @@
* @file hmx_upgrade_nvram.h
*/
+#ifndef HMX_UPGRADE_NVRAM_H_
+#define HMX_UPGRADE_NVRAM_H_
/*******************************************************************/
/**************************** Header Files**************************/
/*******************************************************************/
@@ -339,4 +341,5 @@
/* End global function prototypes */
+#endif // HMX_UPGRADE_NVRAM_H_
/*@}*/