default or selected kernelversion does not have config value CONFIG_ARCH_WANT_RELAX_ORDER.
Result is shown for kernelversion 5.4.69

CONFIG_ARCH_WANT_RELAX_ORDER (not configurable)

configname: CONFIG_ARCH_WANT_RELAX_ORDER

Linux Kernel Configuration
└─>ARCH_WANT_RELAX_ORDER
In linux kernel since version 4.5.1 (release Date: 2016-04-12)