config: 16.0: Add Sundanese

Change-Id: I7ca94a380f6aaa7d899945fbffc833277c4bb9e3
diff --git a/config/lineage-16.0_aosp.yaml b/config/lineage-16.0_aosp.yaml
index f76f18f..31b2946 100644
--- a/config/lineage-16.0_aosp.yaml
+++ b/config/lineage-16.0_aosp.yaml
@@ -68,6 +68,8 @@
         es-CO: es-rCO
         # Spanish, Mexico - LineageOS
         es-MX: es-rMX
+        # Sundanese - LineageOS
+        su: su
         # Uyghur - LineageOS
         ug: ug
         # Venetian - LineageOS