general: Replace RESULT_SUCCESS with ResultSuccess

Transition to PascalCase for result names.

src/core/hle/service/btdrv/btdrv.cpp

@@ -44,7 +44,7 @@ private:
         LOG_WARNING(Service_BTM, "(STUBBED) called");
 
         IPC::ResponseBuilder rb{ctx, 2, 1};
-        rb.Push(RESULT_SUCCESS);
+        rb.Push(ResultSuccess);
         rb.PushCopyObjects(register_event.GetReadableEvent());
     }