Fill in sideband stream caveat

Change-Id: I20db8aea8f13acf31b42db08d90b338da8a5209c
diff --git a/libs/gui/Surface.cpp b/libs/gui/Surface.cpp
index b628a15..95f4084 100644
--- a/libs/gui/Surface.cpp
+++ b/libs/gui/Surface.cpp
@@ -86,6 +86,10 @@
     return mGraphicBufferProducer;
 }
 
+void Surface::setSidebandStream(const sp<NativeHandle>& stream) {
+    mGraphicBufferProducer->setSidebandStream(stream);
+}
+
 int Surface::hook_setSwapInterval(ANativeWindow* window, int interval) {
     Surface* c = getSelf(window);
     return c->setSwapInterval(interval);