CONFIG_M527x is not available for thedefaultarchitecture x86.
Result is shown for architecture m68knommu

CONFIG_M527x (not configurable)

modulename: pit.ko

configname: CONFIG_M527x

uClinux/68k (w/o MMU) Kernel Configuration
└─>Processor type and features
└─>M527x
In linux kernel since version 2.6.12  
source code:
depends
CONFIG_M5271 or CONFIG_M5275

is selected by
CONFIG_FEC