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-qualcomm/conf/layer.conf b/meta-qualcomm/conf/layer.conf
index 6b1ea78..e4c8721 100644
--- a/meta-qualcomm/conf/layer.conf
+++ b/meta-qualcomm/conf/layer.conf
@@ -4,4 +4,4 @@
 BBFILE_COLLECTIONS += "qualcomm"
 BBFILE_PATTERN_qualcomm = ""
 
-LAYERSERIES_COMPAT_qualcomm = "dunfell gatesgarth"
+LAYERSERIES_COMPAT_qualcomm = "gatesgarth hardknott"