CONFIG_DT_NETGEAR_CVG834G is not available for the selected architecture x86.
Result is shown for architecture mips

NETGEAR CVG834G

configname: CONFIG_DT_NETGEAR_CVG834G

Built-in device tree
└─>NETGEAR CVG834G
In linux kernel since version 4.1 (release Date: 2015-06-21)