CONFIG_PPC_MPC5200_SIMPLE is not available for thedefaultarchitecture x86.
Result is shown for architecture powerpc

Generic support for simple MPC5200 based boards

modulename: mpc5200_simple.ko

configname: CONFIG_PPC_MPC5200_SIMPLE

Linux Kernel Configuration
└─>Generic support for simple MPC5200 based boards
In linux kernel since version 2.6.25 (release Date: 2008-04-16)  
This option enables support for a simple MPC52xx based boards which
do not need a custom platform specific setup. Such boards are
supported assuming the following:

- GPIO pins are configured by the firmware,
- CDM configuration (clocking) is setup correctly by firmware,
- if the 'fsl,has-wdt' property is present in one of the
gpt nodes, then it is safe to use such gpt to reset the board,
- PCI is supported if enabled in the kernel configuration
and if there is a PCI bus node defined in the device tree.

Boards that are compatible with this generic platform support
are:
intercontrol,digsy-mtc
phytec,pcm030
phytec,pcm032
promess,motionpro
schindler,cm5200
tqc,tqm5200

source code: