CONFIG_IBM440EP_ERR42 is not available for thedefaultarchitecture x86.
Result is shown for architecture powerpc

CONFIG_IBM440EP_ERR42 (not configurable)

configname: CONFIG_IBM440EP_ERR42

Linux Kernel Configuration
└─>IBM440EP_ERR42
In linux kernel since version 2.6.20 (release Date: 2007-02-04)