add langdale to compatible layer

Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
Change-Id: I65febeeec11e6e5b40ee728f42cfbe77023dae1e
diff --git a/meta-evb/conf/layer.conf b/meta-evb/conf/layer.conf
index ddb76fb..debc7fc 100644
--- a/meta-evb/conf/layer.conf
+++ b/meta-evb/conf/layer.conf
@@ -3,4 +3,4 @@
 
 BBFILE_COLLECTIONS += "evb"
 BBFILE_PATTERN_evb = ""
-LAYERSERIES_COMPAT_evb = "honister kirkstone"
+LAYERSERIES_COMPAT_evb = "kirkstone langdale"