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.
1. NUC980 platform: USBH, INPUTCAPTURE, SPINAND. 2. Correct enter-quad-mode routine in board_dec.c. 3. Use RT_ASSERT to catch system-call-exceptions.
1. Add 980 drv_usbd. 2. EMAC - move MDC CLK divider before EMAC initialization. 3. Correct NUC980 and M480 CAN RX_MSG_ID_INDEX definition. 4. add USBD cdc demo - vcom_echo. 5. mnt - add mount_table definition.