default or selected kernelversion does not have config value CONFIG_DWMAC_THEAD.
Result is shown for kernelversion 6.13-rc7

T-HEAD dwmac support

modulename: dwmac-thead.ko

configname: CONFIG_DWMAC_THEAD

Linux Kernel Configuration
└─>Device Drivers
└─>Network device support
└─>Ethernet driver support
└─>Device Tree and Open Firmware support
└─>T-HEAD dwmac support
Support for ethernet controllers on T-HEAD RISC-V SoCs

This selects the T-HEAD platform specific glue layer support for
the stmmac device driver. This driver is used for T-HEAD TH1520
ethernet controller.

source code:
drivers/net/ethernet/stmicro/stmmac/dwmac-thead.c