default or selected kernelversion does not have config value CONFIG_SERIAL_KS8695.
Result is shown for kernelversion 6.9.9
Micrel KS8695 (Centaur) serial port support
modulename: serial_ks8695.ko
configname: CONFIG_SERIAL_KS8695
Linux Kernel Configuration
└─>Device Drivers
└─>Character devices
└─>Serial drivers
└─>Micrel KS8695 (Centaur) serial port support
In linux kernel since version 2.6.24 (release Date: 2008-01-24)
This selects the Micrel Centaur KS8695 UART. Say Y here.