CONFIG_ARCH_VIPER is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
default or selected kernelversion does not have config value CONFIG_ARCH_VIPER.
Result is shown for kernelversion 6.9.5

Arcom/Eurotech VIPER SBC

modulename: viper.ko

configname: CONFIG_ARCH_VIPER

Linux Kernel Configuration
└─>Intel PXA2xx/PXA3xx Implementations
└─>Arcom/Eurotech VIPER SBC
In linux kernel since version 2.6.28 (release Date: 2008-12-24)  
source code: