CONFIG_ARCH_PNX4008 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
Philips Nexperia PNX4008 Mobile
configname: CONFIG_ARCH_PNX4008
ARM system type
└─>Philips Nexperia PNX4008 Mobile
In linux kernel since version 2.6.18 (release Date: 2006-09-19)
This enables support for Philips PNX4008 mobile platform.