ps7/top.py: updated top generator
ps7/top.py: updated top generator

The top.py generates a param.csv file related to a specific tile. The
segdata_tilegrid.tdb related to ps7 now contains two different
addresses bound to a specific tile.

Signed-off-by: Alessandro Comodi <622632e70fd6771cf2cd943f69e5e51ab66adef8@antmicro.com>

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