Get SaxonSoC into the SymbiFlow examples / fpga-tool-perf #57
Description
The SymbiFlow project is slowly getting pretty decent support for the Xilinx Artix 7 part and more specifically the Digilent Arty A7 board. It would be awesome to have a SaxonSoC design in the SymbiFlow Examples repository so we can make sure the design works with the fully open source tooling (we already have a Linux + LiteX with VexRISCV design example working). I logged chipsalliance/f4pga-examples#74) on the SymbiFlow Examples.
It might also good to get SaxonSoC into the SymbiFlow fpga-tool-perf as a test design -- that way we can track how the performance is improved over time (and how the open tools compares to options like Vivado). (Logged chipsalliance/fpga-tool-perf#278 for that.)