完成基于Openamp多核处理器核间通信的rpmsg字符设备驱动(the char device driver module of rpmsg device)

xilinx官方多和编程库文档，用于指导多核ARM编程，实现核间通信，资源共享以及其他高级多核功能。(This user guide describes how to develop communication among the processors on Xilinx Zynq and Zynq UltraScale+ MPSoC platforms.)