CONFIG_85xx is not available for thedefaultarchitecture x86.
Result is shown for architecture ppc

CONFIG_85xx (not configurable)

modulename: open_pic.ko

configname: CONFIG_85xx

Linux Kernel Configuration
└─>85xx
In linux kernel since version 2.6.12  
source code:
arch/ppc/syslib/
depends
CONFIG_E500

is selected by
CONFIG_GIANFAR