configs/stm32ldiscovery: Fix a mimatched #endif introduced in recent commit.

configs/stm32ldiscovery/include/board.h

 /************************************************************************************
  * configs/stm32ldiscovery/include/board.h
- * include/arch/board/board.h
  *
- *   Copyright (C) 2013 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2013, 2017 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -34,8 +33,8 @@
  *
  ************************************************************************************/
 
-#ifndef __CONFIG_STM32LDISCOVERY_INCLUDE_BOARD_H
-#define __CONFIG_STM32LDISCOVERY_INCLUDE_BOARD_H
+#ifndef __CONFIGS_STM32LDISCOVERY_INCLUDE_BOARD_H
+#define __CONFIGS_STM32LDISCOVERY_INCLUDE_BOARD_H
 
 /************************************************************************************
  * Included Files
@@ -275,20 +274,21 @@
 
 #endif
 
+/************************************************************************************
+ * Public Function Prototypes
+ ************************************************************************************/
+
+#ifndef __ASSEMBLY__
 
 #undef EXTERN
 #if defined(__cplusplus)
-#define EXTERN extern "C"
+#  define EXTERN extern "C"
 extern "C"
 {
 #else
-#define EXTERN extern
+#  define EXTERN extern
 #endif
 
-/************************************************************************************
- * Public Function Prototypes
- ************************************************************************************/
-
 /****************************************************************************
  * Name: stm32_slcd_initialize
  *
@@ -308,4 +308,4 @@ int stm32_slcd_initialize(void);
 #endif
 
 #endif /* __ASSEMBLY__ */
-#endif  /* __CONFIG_STM32LDISCOVERY_INCLUDE_BOARD_H */
+#endif  /* __CONFIGS_STM32LDISCOVERY_INCLUDE_BOARD_H */