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

Actions Semi SoCs

configname: CONFIG_ARCH_ACTIONS

Linux Kernel Configuration
└─>Actions Semi SoCs
In linux kernel since version 4.2 (release Date: 2015-08-30)  
This enables support for the Actions Semiconductor S500 SoC family.