arm64: zynqmp: Sync DT with Linux kernel

All changes are recorded in lore.kernel.org. Here are links to that patches
for the record.
Link: https://lore.kernel.org/r/f59a63d8cb941592de6d2dee8afa6f120b2e40c8.1601379794.git.michal.simek@xilinx.com
Link: https://lore.kernel.org/r/68f20a2b2bb0feee80bc3348619c2ee98aa69963.1598263539.git.michal.simek@xilinx.com
Link: https://lore.kernel.org/r/f767fe007e446a2299fda9905e75b723c650a424.1605021644.git.michal.simek@xilinx.com
Link: https://lore.kernel.org/r/cc294ae1a79ef845af6809ddb4049f0c0f5bb87a.1598259551.git.michal.simek@xilinx.com
Link: https://lore.kernel.org/r/20200629081744.13916-1-krzk@kernel.org



And there are other minor changes (just moving things around).

Signed-off-by: Michal Simek <michal.simek@xilinx.com>