OpenAMP V2020.01 Release

OpenAMP 2020.01 Release Notes

This is the 2020.01 release of OpenAMP. With this release, we welcome a new maintainer,
Arnaud Pouliquen, and some new features.

Added virtio feature negotiation.

Other changes
* update IRQ registration in apps
* update maintainers
* bug fixes

Known Limitations:

Linux user space rpmsg and remoteproc have been compiled, but only lightly tested.

The load_fw example for Xilinx zynqmp_r5 has only been compiled using the Xilinx
toolchain and a specific BSP. We recommend using "set (WITH_LOAD_FW OFF)" in your
toolchain file when compiling for zynqmp_r5 unless you have the correct toolchain
and BSP.