CONFIG_ARCH_ENP2611 is not available for the default architecture x86.
Result is shown for architecture arm
default or selected kernelversion does not have config value CONFIG_ARCH_ENP2611.
Result is shown for kernelversion 5.6.17

Support Radisys ENP-2611

modulename: enp2611.ko
configname: CONFIG_ARCH_ENP2611

Linux Kernel Configuration
└─> Intel IXP2400/2800 Implementation Options
└─> Support Radisys ENP-2611

Say 'Y' here if you want your kernel to support the Radisys
ENP2611 PCI network processing card. For more information on
this card, see Documentation/arm/IXP2000.

source code: