CONFIG_ARCH_SOPHGO is not available for thedefaultarchitecture x86.
Result is shown for architecture riscv

Sophgo SoCs

configname: CONFIG_ARCH_SOPHGO

Linux Kernel Configuration
└─>SoC selection
└─>Sophgo SoCs
In linux kernel since version 4.14.330 (release Date: 2023-11-20)  
This enables support for Sophgo SoC platform hardware.