Improved handling of init values in opt_rmdff
Improved handling of init values in opt_rmdff

based on a patch by Mingyu Gao, user gaomy3832 on github

YosysHQ/yosys,azonenberg/yosys,antmicro/yosys,azonenberg/yosys,YosysHQ/yosys,YosysHQ/yosys,azonenberg/yosys,SymbiFlow/yosys,swallat/yosys,swallat/yosys,cliffordwolf/yosys,swallat/yosys,swallat/yosys,antmicro/yosys,cliffordwolf/yosys,cliffordwolf/yosys,SymbiFlow/yosys,SymbiFlow/yosys,cliffordwolf/yosys,SymbiFlow/yosys,SymbiFlow/yosys,cliffordwolf/yosys,YosysHQ/yosys,swallat/yosys,antmicro/yosys,azonenberg/yosys,antmicro/yosys,swallat/yosys,YosysHQ/yosys,azonenberg/yosys,azonenberg/yosys,swallat/yosys,azonenberg/yosys,antmicro/yosys,antmicro/yosys,cliffordwolf/yosys,antmicro/yosys,SymbiFlow/yosys,swallat/yosys,SymbiFlow/yosys,swallat/yosys,antmicro/yosys,YosysHQ/yosys,YosysHQ/yosys,azonenberg/yosys,cliffordwolf/yosys,cliffordwolf/yosys,azonenberg/yosys,YosysHQ/yosys,SymbiFlow/yosys,cliffordwolf/yosys