meta-asrock: catch up with yocto updates

Override variable syntax change, honister compat, and a CONF_VERSION
bump.

Fixes openbmc/openbmc#3816.

Signed-off-by: Zev Weiss <zev@bewilderbeest.net>
Change-Id: Ia41d159d8118e5dba4b213bb0f7c2d61753c8ad3
diff --git a/meta-asrock/conf/layer.conf b/meta-asrock/conf/layer.conf
index 4c06d87..3798223 100644
--- a/meta-asrock/conf/layer.conf
+++ b/meta-asrock/conf/layer.conf
@@ -8,4 +8,4 @@
 BBFILE_COLLECTIONS += "asrock-layer"
 BBFILE_PATTERN_asrock-layer = "^${LAYERDIR}/"
 LAYERVERSION_asrock-layer = "1"
-LAYERSERIES_COMPAT_asrock-layer = "hardknott"
+LAYERSERIES_COMPAT_asrock-layer = "hardknott honister"