default or selected kernelversion does not have config value CONFIG_SERIAL_VR41XX.
Result is shown for kernelversion 6.9.9
NEC VR4100 series Serial Interface Unit support
modulename: vr41xx_siu.ko
configname: CONFIG_SERIAL_VR41XX
Linux Kernel Configuration
└─>Device Drivers
└─>Character devices
└─>Serial drivers
└─>NEC VR4100 series Serial Interface Unit support
In linux kernel since version 2.6.20 (release Date: 2007-02-04)
If you have a NEC VR4100 series processor and you want to use
Serial Interface Unit(SIU) or Debug Serial Interface Unit(DSIU)
(not include VR4111/VR4121 DSIU), say Y. Otherwise, say N.
Serial Interface Unit(SIU) or Debug Serial Interface Unit(DSIU)
(not include VR4111/VR4121 DSIU), say Y. Otherwise, say N.