lpc: add missing headers

Change-Id: Ia279b4eb8e3b1eb4cf51ad495a923505b78bfe1a
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/lpc_aspeed.hpp b/lpc_aspeed.hpp
index 1d5f4ac..91e24af 100644
--- a/lpc_aspeed.hpp
+++ b/lpc_aspeed.hpp
@@ -2,6 +2,8 @@
 
 #include "lpc_interface.hpp"
 
+#include <memory>
+
 namespace blobs
 {