CONFIG_ARCH_ARTPEC is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

Axis Communications ARM based ARTPEC SoCs

configname: CONFIG_ARCH_ARTPEC

Linux Kernel Configuration
└─>Axis Communications ARM based ARTPEC SoCs
In linux kernel since version 3.10 (release Date: 2013-06-30)  

is selected by
CONFIG_CRYPTO_DEV_ARTPEC6