CONFIG_PCMCIA is not available for thedefaultarchitecture x86.
Result is shown for architecture frv

Use PCMCIA

modulename: pcmcia.ko

configname: CONFIG_PCMCIA

Fujitsu FR-V Kernel Configuration
└─>Fujitsu FR-V system setup
└─>Use PCMCIA
In linux kernel since version 2.6.12  
Say Y here if you want to attach PCMCIA- or PC-cards to your FR-V
board. These are credit-card size devices such as network cards,
modems or hard drives often used with laptops computers. There are
actually two varieties of these cards: the older 16 bit PCMCIA cards
and the newer 32 bit CardBus cards. If you want to use CardBus
cards, you need to say Y here and also to "CardBus support" below.

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

To compile this driver as modules, choose M here: the
modules will be called pcmcia_core and ds.