HeadTracking: Make QuarternionUtil.h available

Required to interpret Pose data outside of libheadtracking.

Test: atest libheadtracking-test
Bug: 269620212
Change-Id: I9a20008d985f8b9448149c12815bc5e76fb2186f
diff --git a/media/libheadtracking/PoseDriftCompensator.cpp b/media/libheadtracking/PoseDriftCompensator.cpp
index 0e90cad..2775790 100644
--- a/media/libheadtracking/PoseDriftCompensator.cpp
+++ b/media/libheadtracking/PoseDriftCompensator.cpp
@@ -18,7 +18,7 @@
 
 #include <cmath>
 
-#include "QuaternionUtil.h"
+#include "media/QuaternionUtil.h"
 
 namespace android {
 namespace media {