CONFIG_PPC_EARLY_DEBUG_USBGECKO is not available for thedefaultarchitecture x86.
Result is shown for architecture powerpc

Early debugging through the USB Gecko adapter

configname: CONFIG_PPC_EARLY_DEBUG_USBGECKO

Early debugging console
└─>Early debugging through the USB Gecko adapter
In linux kernel since version 2.6.33 (release Date: 2010-02-24)  
Select this to enable early debugging for Nintendo GameCube/Wii
consoles via an external USB Gecko adapter.