1. Add NUC980 Chili board supporting. 2. Correct NuMicro.h including. 3. Implement rt_hw_us_delay system call function. 4. Move board.c to drv_common.c for M480 and M2354 series.
2. Fix spi/qspi/uspi TX/RX PDMA trigger issue. 3. Drain RX FIFO to remove remain FEF frames in FIFO. 4. Implement RT_DEVICE_CTRL_CLOSE in uart/uuart/scuart driver.