[Libre-soc-dev] daily kan-ban update 10oct2020

[Cole Poirier]

I'm trying to execute ./soc/litex/florent/versa_ecp5.py --build and
getting a cryptic error about a missing port. Any idea what this might
be?

```
4.4.3. Analyzing design hierarchy..
Top module:  \versa_ecp5
Used module:     \test_issuer
ERROR: Module `test_issuer' referenced in module `versa_ecp5' in cell
`test_issuer' does not have a port named 'gpio_wb__err'.
Traceback (most recent call last):
  File "./versa_ecp5.py", line 66, in <module>
    main()
  File "./versa_ecp5.py", line 59, in main
    builder.build(run=args.build)
  File "/home/colepoirier/workspace/litex/litex/soc/integration/builder.py",
line 214, in build
    vns = self.soc.build(build_dir=self.gateware_dir, **kwargs)
  File "/home/colepoirier/workspace/litex/litex/soc/integration/soc.py",
line 1048, in build
    return self.platform.build(self, *args, **kwargs)
  File "/home/colepoirier/workspace/litex/litex/build/lattice/platform.py",
line 39, in build
    return self.toolchain.build(self, *args, **kwargs)
  File "/home/colepoirier/workspace/litex/litex/build/lattice/trellis.py",
line 234, in build
    _run_script(script)
  File "/home/colepoirier/workspace/litex/litex/build/lattice/trellis.py",
line 164, in _run_script
    raise OSError("Subprocess failed")
OSError: Subprocess failed
```

Cole