Updating the decipher datapath to new structure.
Connected the external sbox memory to the key exapansion logic.
Minor layout fix.
Removed obsolete case for 192 bit key.
Adding missing wire from mux.
Changed type of wire to work as l-value in proccedure.
Removed valid port and fixed name of wire. If valid is set, the data is valid.
Updated core tb to match new structure and ports.
Updated dut dump to new wire names.
Renamed file to better reflect that the module is capable of encipher a complete block.
Renamed file to better reflect that the module is capable of decipher a complete block.
Updated module names and headers to reflect new file name.
Updated instantiation type and instance name to match new names for encipher and decipher modules.
Update source file names to match changed names.