lpcmanager

Reflect xenomai3 fix in beremiz. Match beremiz changeset 9fa2f8ede5d6
revamp
2018-05-07, Edouard Tisserant
21fe998eea17
Reflect xenomai3 fix in beremiz. Match beremiz changeset 9fa2f8ede5d6
rt_task_delete(&UART_task);
rt_task_join(&UART_task);
closeserial(UART_fd);
gpio_close(RS485_GPIO_dev);
rt_mutex_delete(&UART_WriteMutex);
rt_mutex_delete(&UART_ReadMutex);