CONFIG_ARCH_CAMELOT is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

Epxa10db

configname: CONFIG_ARCH_CAMELOT

ARM system type
└─>Epxa10db
In linux kernel since version 2.6.12  
This enables support for Altera's Excalibur XA10 development board.
If you would like to build your kernel to run on one of these boards
then you must say 'Y' here. Otherwise say 'N'

is selected by
CONFIG_CPU_ARM922T