meta-quanta: layer.conf: add zeus compatibility

OE-core master will be dropping warrior soon; zeus is the next release.

Signed-off-by: Patrick Venture <venture@google.com>
Change-Id: Ib4e2341845515cc7dcca776536729b406077e5bf
diff --git a/conf/layer.conf b/conf/layer.conf
index ca07679..81759fe 100644
--- a/conf/layer.conf
+++ b/conf/layer.conf
@@ -7,4 +7,4 @@
 
 BBFILE_COLLECTIONS += "quanta-layer"
 BBFILE_PATTERN_quanta-layer := "^${LAYERDIR}/"
-LAYERSERIES_COMPAT_quanta-layer = "thud warrior"
+LAYERSERIES_COMPAT_quanta-layer = "warrior zeus"