Happiness is a git pull and rebuild of #nextpnr / #prjpeppercorn

Not only does "placer2" now work for me (it is a lot faster than "placer1")

But best of all my #gatemate memory mapped SPI interface now works!

"Wiggle your SPI lines in excitement" as a space invader would say.

Thanks to everyone and according to git logs for prjpeppercorn, a special thanks to Miodrag Milanovic