hardknott: yocto release

Latest upstream yocto has moved on to the 3.3 hardknott release

Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
Change-Id: Ieae36798d66d21c2c642931f06407d3bb2acf163
diff --git a/meta-facebook/meta-tiogapass/conf/layer.conf b/meta-facebook/meta-tiogapass/conf/layer.conf
index 1ef53db..94db7e1 100644
--- a/meta-facebook/meta-tiogapass/conf/layer.conf
+++ b/meta-facebook/meta-tiogapass/conf/layer.conf
@@ -8,4 +8,4 @@
 BBFILE_COLLECTIONS += "tiogapass-layer"
 BBFILE_PATTERN_tiogapass-layer := "^${LAYERDIR}/"
 
-LAYERSERIES_COMPAT_tiogapass-layer := "dunfell gatesgarth"
+LAYERSERIES_COMPAT_tiogapass-layer := "gatesgarth hardknott"