default or selected kernelversion does not have config value CONFIG_SERIAL_68360_SMC.
Result is shown for kernelversion 6.2.5

68360 SMC uart support

configname: CONFIG_SERIAL_68360_SMC

Linux Kernel Configuration
└─>Device Drivers
└─>Character devices
└─>Serial drivers
└─>68360 SMC uart support
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
This driver supports the SMC serial ports of the Motorola 68360 CPU.