CONFIG_X86_VOYAGER is not available for thedefaultarchitecture x86.
Result is shown for architecture i386
default or selected kernelversion does not have config value CONFIG_X86_VOYAGER.
Result is shown for kernelversion 5.4.123

Voyager (NCR)

configname: CONFIG_X86_VOYAGER

Subarchitecture Type
└─>Voyager (NCR)
In linux kernel since version 2.6.12  
Voyager is an MCA-based 32-way capable SMP architecture proprietary
to NCR Corp. Machine classes 345x/35xx/4100/51xx are Voyager-based.

*** WARNING ***

If you do not specifically know you have a Voyager based machine,
say N here, otherwise the kernel you build will not be bootable.