hpet config improved.

diff --git a/jailhouse b/jailhouse
index 12a85ea2c906621f02b190ee7dbec6ca34070e74..d6b459944c037d6226f1e2fededcf47b0c3dcfee 160000 (submodule)
--- a/jailhouse
+++ b/jailhouse
@@ -1 +1 @@
-Subproject commit 12a85ea2c906621f02b190ee7dbec6ca34070e74
+Subproject commit d6b459944c037d6226f1e2fededcf47b0c3dcfee