Adjust with changes in libxml2 upgrade am: 8029a0567c am: 78f7efc963 am: 8ad6130dbe

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2772704

Change-Id: I43a1181ce39454deafcf66beecd6afb3fc51e502
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
diff --git a/audio/common/all-versions/test/utility/src/ValidateXml.cpp b/audio/common/all-versions/test/utility/src/ValidateXml.cpp
index 4d6f003..b7e685b 100644
--- a/audio/common/all-versions/test/utility/src/ValidateXml.cpp
+++ b/audio/common/all-versions/test/utility/src/ValidateXml.cpp
@@ -19,6 +19,7 @@
 
 #include <numeric>
 
+#include <libxml/parser.h>
 #define LIBXML_SCHEMAS_ENABLED
 #include <libxml/xmlschemastypes.h>
 #define LIBXML_XINCLUDE_ENABLED