bump submodule

Change-Id: Ic7e19f0cfa13bea3ea1e0956222e7d303ad7a4dc
diff --git a/classes/system b/classes/system
index 9a1f46b..6d54b48 160000
--- a/classes/system
+++ b/classes/system
@@ -1 +1 @@
-Subproject commit 9a1f46bd7be9214010f5761927cd9cfdb43450f4
+Subproject commit 6d54b48560a6a0495b62fc1f973ce0f36b8e4963