Atheros AR7XXX/AR9XXX built-in ethernet mac support

modulename: ag71xx.ko

configname: CONFIG_AG71XX

Linux Kernel Configuration
└─>Device Drivers
└─>Network device support
└─>Ethernet driver support
└─>Atheros AR7XXX/AR9XXX built-in ethernet mac support
In linux kernel since version 4.14.326 (release Date: 2023-09-23)  
If you wish to compile a kernel for AR7XXX/91XXX and enable
ethernet support, then you should always answer Y to this.

source code:
drivers/net/ethernet/atheros/ag71xx.c
selects
CONFIG_PHYLINK