1. Fix open-control order issue in CAN driver. 2. [N9H30] Improve N9H30 I2C busy-wait implementation. 3. [N9H30] Support 1024x600x32b LCD panel. 4. Move nu_packages menu into sub-menu of board.
(1) Support NK-N9H30 board. (2) Change Mutex's flag to RT_IPC_FLAG_PRIO from RT_IPC_FLAG_FIFO.