default or selected kernelversion does not have config value CONFIG_HOSTESS_SV11.
Result is shown for kernelversion 6.9.9

Comtrol Hostess SV-11 support

modulename: z85230.ko

configname: CONFIG_HOSTESS_SV11

Linux Kernel Configuration
└─>Device Drivers
└─>Network device support
└─>Wan interfaces support
└─>Comtrol Hostess SV-11 support
In linux kernel since version 2.6.12  
Driver for Comtrol Hostess SV-11 network card which
operates on low speed synchronous serial links at up to
256Kbps, supporting PPP and Cisco HDLC.

The driver will be compiled as a module: the
module will be called hostess_sv11.

source code:
drivers/net/wan/