arm64: zynqmp: Add Xilinx AES node

This patch adds a AES DT node for Xilinx ZynqMP SoC.

Signed-off-by: Kalyani Akula <kalyani.akula@xilinx.com>
Acked-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>