Up to now, the IOPortListener only caught invocations of INB/OUTB with the port number in DX and 8-bit input/output (from/to AL), but none of the various other methods to access the I/O port range (e.g., by 8-bit immediate port numbers). This change is supposed to catch all other cases, too. Change-Id: I1180cd9c1d59df600067739817adab684b18a608