Reset reporting on a new game.

This way "once" and "spam" no longer persist between runs.  Makes it
easier to test a bunch of games in a row without restarting in between.

Core/HLE/sceKernel.cpp

@@ -133,6 +133,7 @@ void __KernelInit()
 	__HeapInit();
 	
 	SaveState::Init();  // Must be after IO, as it may create a directory
+	Reporting::Init();
 
 	// "Internal" PSP libraries
 	__PPGeInit();