VBoot Reference: Refactor Part 2 - Crypto Libraries

Removing multiple top level includes - now padding.h, rsa.h and sha.h are used internally and cryptolib.h must be used instead for all modules that wish to use crypto functions.

I am trying to separate refactors involving code movement from one file to another, and the movement of files themselves into separate CLs so that it's clear what changed.

Review URL: http://codereview.chromium.org/1574005
diff --git a/crypto/rsa_utility.c b/crypto/rsa_utility.c
index 5ac2db4..bf32284 100644
--- a/crypto/rsa_utility.c
+++ b/crypto/rsa_utility.c
@@ -2,12 +2,10 @@
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  *
- * Utility functions for message digest functions.
+ * Implementation of RSA utility functions.
  */
 
-#include "padding.h"
-#include "rsa_utility.h"
-#include "sha_utility.h"
+#include "cryptolib.h"
 #include "utility.h"
 
 int RSAProcessedKeySize(int algorithm) {