Zynq: fix build with OMX 2019.2
These couple of patches are needed to build with latest version of Zynq's OMX headers: https://github.com/Xilinx/vcu-omx-il/tree/release-2019.2
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The migration is almost done, at least the rest should happen in the background. There are still a few technical difference between the old cluster and the new ones, and they are summarized in this issue. Please pay attention to the TL:DR at the end of the comment.
These couple of patches are needed to build with latest version of Zynq's OMX headers: https://github.com/Xilinx/vcu-omx-il/tree/release-2019.2