bump submodule

Change-Id: Ie1e9d4ddf693e8e676ac52ab52dccdc03c1bd90b
diff --git a/classes/system b/classes/system
index ff1dbcb..378c64b 160000
--- a/classes/system
+++ b/classes/system
@@ -1 +1 @@
-Subproject commit ff1dbcb1327a1dcb5500674ca3c431a0678c328e
+Subproject commit 378c64b686fd5ab844154070cfe97f43b698dfa0