CONFIG_CPU_N10 is not available for thedefaultarchitecture x86.
Result is shown for architecture nds32
default or selected kernelversion does not have config value CONFIG_CPU_N10.
Result is shown for kernelversion 6.9.9

AndesCore N10

configname: CONFIG_CPU_N10

minimum CPU type
└─>AndesCore N10
In linux kernel since version 4.2 (release Date: 2015-08-30)