default or selected kernelversion does not have config value CONFIG_NEED_PROC_VMCORE_DEVICE_RAM.
Result is shown for kernelversion 6.6.78

CONFIG_NEED_PROC_VMCORE_DEVICE_RAM (not configurable)

configname: CONFIG_NEED_PROC_VMCORE_DEVICE_RAM

Linux Kernel Configuration
└─>File systems
└─>Pseudo filesystems
└─>NEED_PROC_VMCORE_DEVICE_RAM
In linux kernel since version 6.6.78 (release Date: 2025-02-17)