CONFIG_PXA95x is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

CONFIG_PXA95x (not configurable)

modulename: mfp-pxa3xx.ko

and/or

mfp.ko

configname: CONFIG_PXA95x

Linux Kernel Configuration
└─>PXA95x
In linux kernel since version 2.6.38 (release Date: 2011-03-14)  
Select code specific to PXA95x variants

source code:
/arch/arm/mach-pxa/
selects
CONFIG_CPU_PJ4

depends
CONFIG_ARCH_PXA

is depended by
CONFIG_CPU_PXA955