dunfell: add support for new layer

(From meta-facebook rev: e7ca2cd4edb25b44205da051630ab28f36f1e0a2)

Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
Change-Id: I643b04c0ec805d0155f62fc6e136de40248f018f
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
diff --git a/meta-facebook/conf/layer.conf b/meta-facebook/conf/layer.conf
index bc7b5de..786b647 100644
--- a/meta-facebook/conf/layer.conf
+++ b/meta-facebook/conf/layer.conf
@@ -7,4 +7,4 @@
 
 BBFILE_COLLECTIONS += "facebook-layer"
 BBFILE_PATTERN_facebook-layer := "^${LAYERDIR}/"
-LAYERSERIES_COMPAT_facebook-layer := "warrior zeus"
+LAYERSERIES_COMPAT_facebook-layer := "warrior zeus dunfell"