CONFIG_ARCH_IOP3XX is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
default or selected kernelversion does not have config value CONFIG_ARCH_IOP3XX.
Result is shown for kernelversion 5.4.123
IOP3xx-based
configname: CONFIG_ARCH_IOP3XX
ARM system type
└─>IOP3xx-based