default or selected kernelversion does not have config value CONFIG_SERIAL167.
Result is shown for kernelversion 5.6.18

CD2401 support for MVME166/7 serial ports

modulename: serial167.ko

configname: CONFIG_SERIAL167

Linux Kernel Configuration
└─>Device Drivers
└─>Staging drivers
└─>CD2401 support for MVME166/7 serial ports
In linux kernel since version 2.6.12  
This is the driver for the serial ports on the Motorola MVME166,
167, and 172 boards. Everyone using one of these boards should say
Y here.

source code: