lp: remove lp::PrefixAnnouncement in favor of ndn::PrefixAnnouncement

refs: #4280

Change-Id: I09847adaeb000ff4b305fb42dd2a1eb2572aff42
diff --git a/src/lp/fields.hpp b/src/lp/fields.hpp
index 890da2b..9d27af2 100644
--- a/src/lp/fields.hpp
+++ b/src/lp/fields.hpp
@@ -26,7 +26,7 @@
 
 #include "cache-policy.hpp"
 #include "nack-header.hpp"
-#include "prefix-announcement.hpp"
+#include "prefix-announcement-header.hpp"
 
 #include <boost/mpl/set.hpp>
 
@@ -105,7 +105,7 @@
 BOOST_CONCEPT_ASSERT((Field<NonDiscoveryField>));
 
 typedef FieldDecl<field_location_tags::Header,
-                  PrefixAnnouncement,
+                  PrefixAnnouncementHeader,
                   tlv::PrefixAnnouncement> PrefixAnnouncementField;
 BOOST_CONCEPT_ASSERT((Field<PrefixAnnouncementField>));