Split out RF to separate module

serv.core

@@ -16,8 +16,8 @@ filesets:
       - rtl/serv_ctrl.v
       - rtl/serv_decode.v
       - rtl/serv_mem_if.v
-      - rtl/serv_regfile.v
-      - rtl/serv_mpram.v
+      - rtl/serv_rf_if.v
+      - rtl/serv_rf_2bit.v
       - rtl/serv_state.v
       - rtl/serv_top.v
     file_type : verilogSource