TODO: [TASK] Add support to run embedded MN demo on target Zynq SoC

TODO:
* Move SDCARD to apps/common/src/sdcard

The demo MN application for target Zynq SoC uses dual processor
stack library.

The application for Zynq SoC is modified to use configuration
file (mnobd.cdc) placed on the SD card along with binaries instead
of compiling it with source.

Change-Id: Icab97021fb579cf83e075c9a036278ea7fa475b0
[TASK] Update daemon application for Microblaze to support Zynq

Add support in driver daemon application to run on Microblaze in Zynq.
[FIX] Fix referenced bsp for eclipse project

Change-Id: I0a9222e0ce77d8d642b627b6c80c0c7b483a0941
[TASK] Add known issues about Xilinx Zynq MN demo

Add known issues about Xilinx Zynq MN demo.
[TASK] Add Zynq SoC platform documentation

- Add platform documentation for Zynq SoC.
- Update build steps for demos, drivers, hardware and stack
  to compile it for target Xilinx ARM.