default or selected kernelversion does not have config value CONFIG_MICROCHIP_KSZ.
Result is shown for kernelversion 6.9.9
Microchip KSZ series switch support
modulename: ksz_common.ko
configname: CONFIG_MICROCHIP_KSZ
Linux Kernel Configuration
└─>Device Drivers
└─>Network device support
└─>Distributed Switch Architecture drivers
└─>Microchip KSZ series switch support
In linux kernel since version 4.2 (release Date: 2015-08-30)
This driver adds support for Microchip KSZ switch chips.