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

CONFIG_CPU_SUPPORTS_CPUFREQ (not configurable)

configname: CONFIG_CPU_SUPPORTS_CPUFREQ

Linux/MIPS Kernel Configuration
└─>CPU_SUPPORTS_CPUFREQ
In linux kernel since version 2.6.33 (release Date: 2010-02-24)