CONFIG_CRIS_MACH_ARTPEC3 is not available for thedefaultarchitecture x86.
Result is shown for architecture cris

ARTPEC-3

modulename: cris-artpec3-cpufreq.ko

configname: CONFIG_CRIS_MACH_ARTPEC3

Processor type
└─>ARTPEC-3
In linux kernel since version 2.6.25 (release Date: 2008-04-16)  
Support Axis ARTPEC-3.

source code:
drivers/cpufreq/cris-artpec3-cpufreq.c