CONFIG_PPC_MPC5200 is not available for thedefaultarchitecture x86.
Result is shown for architecture powerpc

CONFIG_PPC_MPC5200 (not configurable)

configname: CONFIG_PPC_MPC5200

Linux Kernel Configuration
└─>PPC_MPC5200
In linux kernel since version 2.6.22 (release Date: 2007-07-08)  

is depended by
CONFIG_PPC_LITE5200