Currently doing changes only for k4n8 device
Currently doing changes only for k4n8 device

Signed-off-by: Lalit Narain Sharma <9c29c53297d5df8fd7b65c0b59d2e053721cab65@github.com>

SymbiFlow/yosys-symbiflow-plugins,chipsalliance/yosys-f4pga-plugins,SymbiFlow/yosys-f4pga-plugins,SymbiFlow/yosys-symbiflow-plugins,SymbiFlow/yosys-symbiflow-plugins,chipsalliance/yosys-f4pga-plugins,SymbiFlow/yosys-f4pga-plugins,SymbiFlow/yosys-f4pga-plugins