Update LoRaMac-node to Version 4.4.4，fix Security breach found by Tencent Blade Team please refer to security advisory - CVE-2020-11068

fix Security breach found by Tencent Blade Team please refer to security advisory - CVE-2020-11068

components/connectivity/LoraWAN/boards_common/i2c-board.h

@@ -23,6 +23,11 @@
 #ifndef __I2C_BOARD_H__
 #define __I2C_BOARD_H__
 
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
 #include <stdint.h>
 #include <stdbool.h>
 #include "i2c.h"
@@ -137,4 +142,8 @@ uint8_t I2cMcuWaitStandbyState( I2c_t *obj, uint8_t deviceAddr );
  */
 void I2cSetAddrSize( I2c_t *obj, I2cAddrSize addrSize );
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif // __I2C_BOARD_H__