default or selected kernelversion does not have config value CONFIG_USB_USBNET_MII.
Result is shown for kernelversion 5.15.113
CONFIG_USB_USBNET_MII (not configurable)
configname: CONFIG_USB_USBNET_MII
Linux Kernel Configuration
└─>Device Drivers
└─>USB support
└─>USB Network Adapters
└─>USB_USBNET_MII