default or selected kernelversion does not have config value CONFIG_QEDE_VXLAN.
Result is shown for kernelversion 5.4.33

Virtual eXtensible Local Area Network support

configname: CONFIG_QEDE_VXLAN

Linux Kernel Configuration
└─>Device Drivers
└─>Network device support
└─>Ethernet driver support
└─>Virtual eXtensible Local Area Network support
In linux kernel since version 4.7 (release Date: 2016-07-24)  
This enables hardware offload support for VXLAN protocol over
qede module. Say Y here if you want to enable hardware offload
support for Virtual eXtensible Local Area Network (VXLAN)
in the driver.