CONFIG_ARC_CMDLINE_ONLY is not available for thedefaultarchitecture x86.
Result is shown for architecture mips

CONFIG_ARC_CMDLINE_ONLY (not configurable)

configname: CONFIG_ARC_CMDLINE_ONLY

Linux Kernel Configuration
└─>ARC_CMDLINE_ONLY
In linux kernel since version 5.1 (release Date: 2019-05-05)