Rename TAG_ADDITIONAL_DATA to TAG_ASSOCIATED_DATA.

Change-Id: Ibdbc0f0cd0a8daad6317f7ca0256ada9e6a05cd3
diff --git a/aes_key.cpp b/aes_key.cpp
index ca5c294..5eff739 100644
--- a/aes_key.cpp
+++ b/aes_key.cpp
@@ -67,7 +67,7 @@
         return NULL;
 
     keymaster_blob_t additional_data = {0, 0};
-    authorizations().GetTagValue(TAG_ADDITIONAL_DATA, &additional_data);
+    authorizations().GetTagValue(TAG_ASSOCIATED_DATA, &additional_data);
 
     UniquePtr<Operation> op;
     switch (purpose) {