Fix a typo in drivers/input/gameport/Config.help

drivers/input/gameport/Config.help

@@ -52,7 +52,7 @@ CONFIG_GAMEPORT_VORTEX
   The module will be called vortex.o. If you want to compile it as a
   module, say M here and read <file:Documentation/modules.txt>.
 
-CONFIG_GAMEPORT_CS461x
+CONFIG_GAMEPORT_CS461X
   Say Y here if you have a Cirrus CS461x aka "Crystal SoundFusion"
   PCI audio accelerator and want to use its gameport.