CONFIG_HARRIER_STORE_GATHERING is not available for thedefaultarchitecture x86.
Result is shown for architecture ppc
default or selected kernelversion does not have config value CONFIG_HARRIER_STORE_GATHERING.
Result is shown for kernelversion 5.19-rc1

Enable Harrier store gathering

configname: CONFIG_HARRIER_STORE_GATHERING

Linux/PowerPC Kernel Configuration
└─>Platform options
└─>Enable Harrier store gathering
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
depends
CONFIG_HARRIER