meta-yadro: add dunfell compatibility

OE-core is switching over to dunfell.
This adds dunfell compatibility for meta-yadro, meta-vesnin and
meta-ncole layers.

Change-Id: Id99d98da42b847efcb52215be9a2e3dafd3540eb
Signed-off-by: Alexander Filippov <a.filippov@yadro.com>
diff --git a/meta-vesnin/conf/layer.conf b/meta-vesnin/conf/layer.conf
index 75d9c0f..d5c27d4 100644
--- a/meta-vesnin/conf/layer.conf
+++ b/meta-vesnin/conf/layer.conf
@@ -7,4 +7,4 @@
 
 BBFILE_COLLECTIONS += "vesnin-layer"
 BBFILE_PATTERN_vesnin-layer = "^${LAYERDIR}/"
-LAYERSERIES_COMPAT_vesnin-layer = "warrior zeus"
+LAYERSERIES_COMPAT_vesnin-layer = "warrior zeus dunfell"