savestate shito: fix compile errors.

still far from being finished, so avoid using unless you want to spawn blackholes or some pretty bad shit.

src/CP15.cpp

@@ -57,7 +57,7 @@ void Reset()
     DTCMSize = 0;
 }
 
-void Savestate(Savestate* file)
+void DoSavestate(Savestate* file)
 {
     file->Section("CP15");