add langdale to compatible layer

Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
Change-Id: I65febeeec11e6e5b40ee728f42cfbe77023dae1e
diff --git a/meta-google/conf/layer.conf b/meta-google/conf/layer.conf
index e4f0f19..a5e1469 100644
--- a/meta-google/conf/layer.conf
+++ b/meta-google/conf/layer.conf
@@ -14,5 +14,5 @@
 BBFILE_COLLECTIONS += "google-layer"
 BBFILE_PATTERN_google-layer := "^${LAYERDIR}/"
 LAYERVERSION_google-layer = "1"
-LAYERSERIES_COMPAT_google-layer = "honister kirkstone"
+LAYERSERIES_COMPAT_google-layer = "kirkstone langdale"
 LAYERDEPENDS_google-layer += "core phosphor-layer"