default or selected kernelversion does not have config value CONFIG_STMMAC_TMU_TIMER.
Result is shown for kernelversion 6.2.5

TMU channel 2

configname: CONFIG_STMMAC_TMU_TIMER

Select Timer device
└─>TMU channel 2
In linux kernel since version 2.6.32 (release Date: 2009-12-02)  
depends
CONFIG_CPU_SH4