CONFIG_CPU_SUBTYPE_SH5_103 is not available for thedefaultarchitecture x86.
Result is shown for architecture sh
default or selected kernelversion does not have config value CONFIG_CPU_SUBTYPE_SH5_103.
Result is shown for kernelversion 6.9.9

Support SH5-103 processor

configname: CONFIG_CPU_SUBTYPE_SH5_103

Processor sub-type selection
└─>Support SH5-103 processor
In linux kernel since version 2.6.12  
selects
CONFIG_CPU_SH5

is selected by
CONFIG_SH_CAYMAN