Update VTS header includes

Bug: 273373363
Test: atest --test-mapping hardware/interfaces/audio/aidl/vts
Change-Id: I2ad63f91b013db1ce2d3891216f1bd74606139c8
diff --git a/audio/aidl/vts/EffectFactoryHelper.h b/audio/aidl/vts/EffectFactoryHelper.h
index a2499fd..ca36655 100644
--- a/audio/aidl/vts/EffectFactoryHelper.h
+++ b/audio/aidl/vts/EffectFactoryHelper.h
@@ -21,6 +21,7 @@
 #include <unordered_map>
 #include <vector>
 
+#include <aidl/Vintf.h>
 #include <android/binder_auto_utils.h>
 
 #include "TestUtils.h"