litex: reduce clock to 80MHz and add no-ident-version
litex: reduce clock to 80MHz and add no-ident-version

The no-ident-version flag is needed to produce exactly equal outputs
from LiteX, where both the BIOS and the design do not change from one
build to the other, due to changes in the BIOS LiteX timestamp

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

SymbiFlow/symbiflow-examples,SymbiFlow/symbiflow-examples