power pc8247的BSP，自己写的，测试已经通过，在vxworks环境下编写的。-Power of pc8247 BSP, written by myself, test has been through, vxworks environment in writing.

实现对POWERPC8247 DMA功能，使用DMA进行高速数据传输，两个DMA通道当前打开-Achieve DMA functions on POWERPC8247, use DMA for high-speed data transmission, two DMA channels currently open