docs: Update "new device" section
docs: Update "new device" section

Signed-off-by: Daniel Schultz <adff8adca0fa13ca885c17ff484bfc0eae7d2508@phytec.de>

SymbiFlow/prjxray,SymbiFlow/prjxray,SymbiFlow/prjxray,SymbiFlow/prjxray,SymbiFlow/prjxray