CONFIG_WALNUT is not available for thedefaultarchitecture x86.
Result is shown for architecture powerpc
Walnut
modulename: walnut.ko
configname: CONFIG_WALNUT
Linux Kernel Configuration
└─>Walnut
In linux kernel since version 2.6.20 (release Date: 2007-02-04)
This option enables support for the IBM PPC405GP evaluation board.