CONFIG_CPU_N13 is not available for thedefaultarchitecture x86.
Result is shown for architecture nds32
default or selected kernelversion does not have config value CONFIG_CPU_N13.
Result is shown for kernelversion 6.9.9

AndesCore N13

configname: CONFIG_CPU_N13

minimum CPU type
└─>AndesCore N13
In linux kernel since version 4.2 (release Date: 2015-08-30)