added SimpleMMU, which uses SGLId and offset[23:0] to form physAddr
added SimpleMMU, which uses SGLId and offset[23:0] to form physAddr

cambridgehackers/connectal,cambridgehackers/connectal,hanw/connectal,csail-csg/connectal,csail-csg/connectal,hanw/connectal,chenm001/connectal,chenm001/connectal,csail-csg/connectal,chenm001/connectal,cambridgehackers/connectal,cambridgehackers/connectal,hanw/connectal,hanw/connectal,chenm001/connectal,chenm001/connectal,csail-csg/connectal,hanw/connectal,csail-csg/connectal,cambridgehackers/connectal