Improve access to system registers by using properties, also use exclusive region granularity on exclusive load/stores, and ensure that acquires without releases won't hold the address forever, remove unused ALU rev method

Ryujinx/OsHle/Objects/AudIAudioRenderer.cs

@@ -19,7 +19,7 @@ namespace Ryujinx.OsHle.Objects
             {
                 Context.Memory.WriteInt32(Position + Offset, 5);
             }
-            
+
             return 0;
         }