Priority: required -> Priority: optional

Change-Id: I212835c710caafd637fa8992d2d5be07dbcbab61
diff --git a/debian/control b/debian/control
index e67d9aa..cbcc1e6 100644
--- a/debian/control
+++ b/debian/control
@@ -6,7 +6,7 @@
 
 Package: aiy-board-wlan
 Section: net
-Priority: required
+Priority: optional
 Architecture: all
 Depends:
 Description: Additional configuration for AIY Board wireless networking