CONFIG_ARCH_PNX4008 is not available for the default architecture x86.
Result is shown for architecture arm
default or selected kernelversion does not have config value CONFIG_ARCH_PNX4008.
Result is shown for kernelversion 5.6.17

Philips Nexperia PNX4008 Mobile

configname: CONFIG_ARCH_PNX4008

ARM system type
└─> Philips Nexperia PNX4008 Mobile

This enables support for Philips PNX4008 mobile platform.