CONFIG_SOC_PNX8335 is not available for thedefaultarchitecture x86.
Result is shown for architecture mips

CONFIG_SOC_PNX8335 (not configurable)

configname: CONFIG_SOC_PNX8335

Linux Kernel Configuration
└─>SOC_PNX8335
In linux kernel since version 2.6.28 (release Date: 2008-12-24)