Supports both big and little cores of RISC-V C906,
but does not support ARM cores. Currently, only UART
drivers are supported on the peripherals.
Signed-off-by: Shicheng Chu <1468559561@qq.com>
For bsp/cvitek, all drivers related files are moved to the directory
bsp/cvitek/drivers, so the drivers_path_prefix processing in the
SConstruct of the three bsp projects can be simplified.
Signed-off-by: Chen Wang <unicorn_wang@outlook.com>