default or selected kernelversion does not have config value CONFIG_HISAX_FRITZ_PCIPNP.
Result is shown for kernelversion 6.9.9

AVM Fritz!Card PCI/PCIv2/PnP support

modulename: hisax_isac.ko

configname: CONFIG_HISAX_FRITZ_PCIPNP

Linux Kernel Configuration
└─>Device Drivers
└─>ISDN support
└─>Old ISDN4Linux (deprecated)
└─>Passive cards
└─>AVM Fritz!Card PCI/PCIv2/PnP support
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
This enables the driver for the AVM Fritz!Card PCI,
Fritz!Card PCI v2 and Fritz!Card PnP.
(the latter also needs you to select "ISA Plug and Play support"
from the menu "Plug and Play configuration")

source code: