Simple. Say the vTEP vmKernel interfaces are called vmk7 and vmk8 respectively.
In the Flash WebGUI, go to Networking and your dvSwitch. Look for the "vxw-vmknicPG-dvs-***" entires (you should have two, one for each vmkernel port". Edit those entries "Teaming and Fail-over" Policies to each have their own active and standby adapter.
Then, all your hosts will pick that up automatically.
You can verify it by going to a host -> configure -> virtual switches -> your dvSwitch and look at the topology-map. You should see each vTEP vmkernel port going over another physical card/port.