default or selected kernelversion does not have config value CONFIG_NET_PCMCIA.
Result is shown for kernelversion 6.2.5

PCMCIA network device support

configname: CONFIG_NET_PCMCIA

Linux Kernel Configuration
└─>Device Drivers
└─>Network device support
└─>PCMCIA network device support
In linux kernel since version 2.6.12  
Say Y if you would like to include support for any PCMCIA or CardBus
network adapters, then say Y to the driver for your particular card
below. PCMCIA- or PC-cards are credit-card size devices often used
with laptops computers; CardBus is the newer and faster version of
PCMCIA.

To use your PC-cards, you will need supporting software from David
Hinds' pcmcia-cs package (see the file Documentation/Changes
for location). You also want to check out the PCMCIA-HOWTO,
available from <http://www.tldp.org/docs.html#howto>.

If unsure, say N.