Switch to default generating FSDB

vlsi/Makefile

@@ -177,7 +177,7 @@ $(SIM_DEBUG_CONF): $(VLSI_RTL) $(HARNESS_FILE) $(HARNESS_SMEMS_FILE) $(sim_commo
 	echo "  saif.mode: 'time'" >> $@
 	echo "  saif.start_time: '0ns'" >> $@
 	echo "  saif.end_time: '`bc <<< $(timeout_cycles)*$(CLOCK_PERIOD)`ns'" >> $@
-ifdef USE_FSDB
+ifndef USE_VPD
 	echo "  options:" >> $@
 	echo '    - "-kdb"' >> $@
 	echo "  options_meta: 'append'" >> $@
@@ -202,7 +202,7 @@ $(POWER_CONF): $(VLSI_RTL) $(HARNESS_FILE) $(HARNESS_SMEMS_FILE) $(sim_common_fi
 	echo "  database: '$(OBJ_DIR)/par-rundir/$(VLSI_TOP)_FINAL'" >> $@
 ifneq ($(BINARY), )
 	echo "  waveforms: [" >> $@
-ifdef USE_FSDB
+ifndef USE_VPD
 	echo "    '$(sim_out_name).fsdb'" >> $@
 else
 	echo "    '$(sim_out_name).vpd'" >> $@