build: Experimental support to build using precompiled headers

This type of build needs to be explicitly enabled using --with-pch
configure option.

Change-Id: I02dc304187d54c3cf40f1d51b1b11b21f868e225
diff --git a/src/security/sec-tpm-memory.cpp b/src/security/sec-tpm-memory.cpp
index d4de6fc..a72e385 100644
--- a/src/security/sec-tpm-memory.cpp
+++ b/src/security/sec-tpm-memory.cpp
@@ -5,8 +5,11 @@
  * See COPYING for copyright and distribution information.
  */
 
-#include "security/sec-tpm-memory.hpp"
-#include "security/public-key.hpp"
+#include "common.hpp"
+
+#include "sec-tpm-memory.hpp"
+#include "public-key.hpp"
+
 #include <openssl/ssl.h>
 #include <openssl/sha.h>
 #include <openssl/rsa.h>