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

Run self-tests of the feature-fixup code

modulename: feature-fixups-test.ko

configname: CONFIG_FTR_FIXUP_SELFTEST

Linux Kernel Configuration
└─>Run self-tests of the feature-fixup code
In linux kernel since version 2.6.27 (release Date: 2008-10-09)  
source code:
arch/powerpc/lib/