default or selected kernelversion does not have config value CONFIG_SERIAL_SGI_L1_CONSOLE.
Result is shown for kernelversion 6.9.9
SGI Altix L1 serial console support
modulename: sn_console.ko
configname: CONFIG_SERIAL_SGI_L1_CONSOLE
Linux Kernel Configuration
└─>Device Drivers
└─>Character devices
└─>Serial drivers
└─>SGI Altix L1 serial console support
In linux kernel since version 2.6.20 (release Date: 2007-02-04)
If you have an SGI Altix and you would like to use the system
controller serial port as your console (you want this!),
say Y. Otherwise, say N.
controller serial port as your console (you want this!),
say Y. Otherwise, say N.