CONFIG_MPC85xx_DS is not available for thedefaultarchitecture x86.
Result is shown for architecture powerpc

Freescale MPC8544 DS / MPC8572 DS / P2020 DS

modulename: mpc85xx_ds.ko

configname: CONFIG_MPC85xx_DS

Linux Kernel Configuration
└─>Freescale Book-E Machine Type
└─>Freescale MPC8544 DS / MPC8572 DS / P2020 DS
In linux kernel since version 2.6.24 (release Date: 2008-01-24)  
This option enables support for the MPC8544 DS, MPC8572 DS and P2020 DS boards

source code: