treewide: support yocto kirkstone release

* Deprecate N-1 release (hardknott).
* Enable N+1 release (kirkstone).

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I39e027e02dab64b4390b46ffbd9c299c858f403e
diff --git a/meta-inventec/conf/layer.conf b/meta-inventec/conf/layer.conf
index e390573..ff581a4 100644
--- a/meta-inventec/conf/layer.conf
+++ b/meta-inventec/conf/layer.conf
@@ -7,7 +7,7 @@
 
 BBFILE_COLLECTIONS += "inventec"
 BBFILE_PATTERN_inventec := "^${LAYERDIR}/"
-LAYERSERIES_COMPAT_inventec = "hardknott honister"
+LAYERSERIES_COMPAT_inventec = "honister kirkstone"
 BBFILE_PRIORITY_inventec = "6"
 
 # Provide a variable that points the base of the hpe layer.