Fix bug which allows VHDL files compile under VLOG in common compilation, after this fix, SV and V files go to VLOG and VHDL go to VCOM
Fix bug which allows VHDL files compile under VLOG in common compilation,
after this fix, SV and V files go to VLOG and VHDL go to VCOM

lowRISC/edalize,SymbiFlow/edalize,lowRISC/edalize,SymbiFlow/edalize