Install message/types.hpp

Change-Id: I0073d42d1ccb56e7cd5997effb39769c2fea3fec
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/Makefile.am b/Makefile.am
index 046ee20..65e57d3 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -5,6 +5,7 @@
 	sdbusplus/message.hpp \
 	sdbusplus/message/append.hpp \
 	sdbusplus/message/read.hpp \
+	sdbusplus/message/types.hpp \
 	sdbusplus/server.hpp \
 	sdbusplus/server/interface.hpp \
 	sdbusplus/server/manager.hpp \