jailhouse: updated hpet conf. l4: Add worked benchmark.

diff --git a/l4 b/l4
index 593d9f53c558ebe5dbc6b1bae877f911f8f84e94..90396b8a810cec43686e3355b43bf290248beb4c 160000 (submodule)
--- a/l4
+++ b/l4
@@ -1 +1 @@
-Subproject commit 593d9f53c558ebe5dbc6b1bae877f911f8f84e94
+Subproject commit 90396b8a810cec43686e3355b43bf290248beb4c