default or selected kernelversion does not have config value CONFIG_ATH_CARDS.
Result is shown for kernelversion 6.5.1

Atheros Wireless Cards

configname: CONFIG_ATH_CARDS

Linux Kernel Configuration
└─>Device Drivers
└─>Network device support
└─>Wireless LAN
└─>Atheros Wireless Cards
In linux kernel since version 3.1 (release Date: 2011-10-24)  
This will enable the support for the Atheros wireless drivers.
ath5k, ath9k, ath9k_htc and ar9170 drivers share some common code, this option
enables the common ath.ko module which shares common helpers.

For more information and documentation on this module you can visit:

http://wireless.kernel.org/en/users/Drivers/ath

For information on all Atheros wireless drivers visit:

http://wireless.kernel.org/en/users/Drivers/Atheros