Makefile: Fix vopt stage by forcing net compatible types for ports (#24)

Fixes vopt stage for newer questasim versions

Co-authored-by: bluew <[email protected]>

Makefile

@@ -258,7 +258,8 @@ riscv-benchmarks          := $(shell xargs printf '\n%s' < $(riscv-benchmarks-li
 incdir := vendor/pulp-platform/common_cells/include/ vendor/pulp-platform/axi/include/ corev_apu/register_interface/include/
 
 # Compile and sim flags
-compile_flag     += +cover=bcfst+/dut -incr -64 -nologo -quiet -suppress 13262 -permissive +define+$(defines)
+compile_flag     += +cover=bcfst+/dut -incr -64 -nologo -quiet -suppress 13262 -permissive -svinputport=compat +define+$(defines)
+
 uvm-flags        += +UVM_NO_RELNOTES +UVM_VERBOSITY=LOW
 questa-flags     += -t 1ns -64 -coverage -classdebug $(gui-sim) $(QUESTASIM_FLAGS)
 compile_flag_vhd += -64 -nologo -quiet -2008