default or selected kernelversion does not have config value CONFIG_AIRO_CS.
Result is shown for kernelversion 6.9.2

Cisco/Aironet 34X/35X/4500/4800 PCMCIA cards

modulename: airo_cs.ko

configname: CONFIG_AIRO_CS

Linux Kernel Configuration
└─>Device Drivers
└─>Network device support
└─>Wireless LAN
└─>Cisco/Aironet 34X/35X/4500/4800 PCMCIA cards
In linux kernel since version 2.6.12  
This is the standard Linux driver to support Cisco/Aironet PCMCIA
802.11 wireless cards. This driver is the same as the Aironet
driver part of the Linux Pcmcia package.
It supports the new 802.11b cards from Cisco (Cisco 34X, Cisco 35X
- with or without encryption) as well as card before the Cisco
acquisition (Aironet 4500, Aironet 4800, Aironet 4800B). It also
supports OEM of Cisco such as the DELL TrueMobile 4800 and Xircom
802.11b cards.

This driver support both the standard Linux Wireless Extensions
and Cisco proprietary API, so both the Linux Wireless Tools and the
Cisco Linux utilities can be used to configure the card.

source code: