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feat: Initialize Kintex FPGA while booting MPSoC

Seyednima Omidsajedi requested to merge kintex_init into rel-v2020.2

When the MPSoC boots, the Main PLL is reconfigured so that the correct clock frequency is generated for the Aurora interface between Kintex and Artix. After the clock frequency has changed, the Kintex needs to be reset and the SFP GPIOs need to be configured properly, so that the Aurora connection is established.

  • Wrote init script that resets the Kintex and sets the GPIOs
  • Init script is executed after the Main PLL is reconfigured

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