Add layer.conf for meta-resin-vab820
Add layer.conf for meta-resin-vab820

Signed-off-by: Jon Grisky <44f878afe53efc66b76772bd845eb65944ed8232@resin.io>

resin-os/meta-resin,resin-os/meta-resin,resin-os/meta-resin,resin-os/meta-resin