follow #1

seperate files from latest SDK (currently 14.2.0) from good old non-
secure bootloader sdk 11

lib/sdk11/components/libraries/bootloader_dfu/bootloader_util.h

@@ -0,0 +1,38 @@
+/* Copyright (c) 2013 Nordic Semiconductor. All Rights Reserved.
+ *
+ * The information contained herein is property of Nordic Semiconductor ASA.
+ * Terms and conditions of usage are described in detail in NORDIC
+ * SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.
+ *
+ * Licensees are granted free, non-transferable use of the information. NO
+ * WARRANTY of ANY KIND is provided. This heading must NOT be removed from
+ * the file.
+ *
+ */
+
+ /**@file
+ *
+ * @defgroup nrf_bootloader_util Bootloader util API.
+ * @{     
+ *  
+ * @brief Bootloader util module interface.
+ */
+ 
+#ifndef BOOTLOADER_UTIL_H__
+#define BOOTLOADER_UTIL_H__
+
+#include <stdint.h>
+#include "bootloader_types.h"
+
+/**@brief Function for starting the application (or bootloader) at the provided address.
+ * 
+ * @param[in]  start_addr             Start address.
+ *
+ * @note This function will never retrun. Instead it will reset into the application of the 
+ *       provided address.
+ */
+void bootloader_util_app_start(uint32_t start_addr);
+
+#endif // BOOTLOADER_UTIL_H__
+
+/**@} */