CONFIG_ARM64_RELOC_TEST is not available for thedefaultarchitecture x86.
Result is shown for architecture arm64

Relocation testing module

modulename: arm64-reloc-test.ko

configname: CONFIG_ARM64_RELOC_TEST

Linux Kernel Configuration
└─>Relocation testing module
In linux kernel since version 3.10 (release Date: 2013-06-30)  
source code:
arch/arm64/kernel/
depends
CONFIG_MODULES