project directories reorganization

hw/old_rtl/cache/Makefile

@@ -0,0 +1,12 @@
+all: RUNFILE
+
+
+VERILATOR:
+	verilator --compiler gcc --Wno-UNOPTFLAT -Wall --trace -cc VX_d_cache_encapsulate.v -Irtl --exe d_cache_test_bench.cpp -CFLAGS -std=c++11
+
+RUNFILE: VERILATOR
+	(cd obj_dir && make -j -f VVX_d_cache_encapsulate.mk)
+
+clean:
+	rm ./obj_dir/*
+