Adjust with changes in libxml2 upgrade

Bug: 307806447
Test: TreeHugger
Change-Id: I4fdc730f0783f676d5f976f933f05ee3c6e72818
diff --git a/src/utils/xml_libxml2.c b/src/utils/xml_libxml2.c
index e47e564..7b7aeb7 100644
--- a/src/utils/xml_libxml2.c
+++ b/src/utils/xml_libxml2.c
@@ -8,7 +8,7 @@
 
 #include "includes.h"
 #define LIBXML_VALID_ENABLED
-#include <libxml/tree.h>
+#include <libxml/parser.h>
 #include <libxml/xmlschemastypes.h>
 
 #include "common.h"