Support internal DDR memory model for simulation in tech_ddr.

libraries/technology/ddr/hdllib.cfg

@@ -10,8 +10,10 @@ synth_files =
     tech_ddr_pkg.vhd
     tech_ddr_component_pkg.vhd
     tech_ddr_stratixiv.vhd
+    
+    tech_ddr_mem_model_component_pkg.vhd
+    tech_ddr_mem_model.vhd
+    
     tech_ddr.vhd
 
 test_bench_files =
-    tech_ddr_mem_model_component_pkg.vhd
-    tech_ddr_mem_model.vhd