[bsp/stm32] Add C++ Support

bsp/stm32/libraries/HAL_Drivers/drv_qspi.h

@@ -23,4 +23,4 @@ rt_err_t stm32_qspi_bus_attach_device(const char *bus_name, const char *device_n
 }
 #endif
 
-#endif
+#endif /* __DRV_QSPI_H__ */

bsp/stm32/libraries/HAL_Drivers/drv_spi.h

@@ -67,4 +67,4 @@ struct stm32_spi
     struct rt_spi_bus spi_bus;
 };
 
-#endif /*__DRV_SPI_H_ */
+#endif /*__DRV_SPI_H__ */