default or selected kernelversion does not have config value CONFIG_ANDROID_LOW_MEMORY_KILLER.
Result is shown for kernelversion 6.5.1

Android Low Memory Killer

modulename: lowmemorykiller.ko

configname: CONFIG_ANDROID_LOW_MEMORY_KILLER

Linux Kernel Configuration
└─>Device Drivers
└─>Staging drivers
└─>Android
└─>Android Low Memory Killer
In linux kernel since version 2.6.29 (release Date: 2009-03-23)  
Registers processes to be killed when memory is low

source code:
drivers/staging/android/lowmemorykiller.c