char driver CAN: add tx_confirm function in upperCAN driver.

[OceanfromXiaomi]

Summary

1. Completing the code differences of Xiaomi vela's CAN modules in recent years.
2. add tx_confirm function in upperCAN driver1.
3. nuttx/can: add can controller state setting and getting in uppercan.
4. chardriver upperCAN: support to independent set TX/RX FIFO size.
5. add the ability that control CAN transceiver state.

Impact

Testing