default or selected kernelversion does not have config value CONFIG_A2232.
Result is shown for kernelversion 5.6.17

Commodore A2232 serial support (EXPERIMENTAL)

modulename: ser_a2232.ko
configname: CONFIG_A2232

Linux Kernel Configuration
└─> Device Drivers
└─> Character devices
└─> Commodore A2232 serial support (EXPERIMENTAL)

This option supports the 2232 7-port serial card shipped with the
Amiga 2000 and other Zorro-bus machines, dating from 1989. At
a max of 19,200 bps, the ports are served by a 6551 ACIA UART chip
each, plus a 8520 CIA, and a master 6502 CPU and buffer as well. The
ports were connected with 8 pin DIN connectors on the card bracket,
for which 8 pin to DB25 adapters were supplied. The card also had
jumpers internally to toggle various pinning configurations.

This driver can be built as a module; but then "generic_serial"
will also be built as a module. This has to be loaded before
"ser_a2232". If you want to do this, answer M here.

source code: