Notify the client about an initial size of (0, 0) instead of (320, 240).

which is documented as "we don't have that information just yet".

Change-Id: I158a53af83d526f713cd30372fce28558894b857
related-to-bug: 6293020
diff --git a/media/libmediaplayerservice/nuplayer/NuPlayerDriver.cpp b/media/libmediaplayerservice/nuplayer/NuPlayerDriver.cpp
index 253bc2f..441cbf3 100644
--- a/media/libmediaplayerservice/nuplayer/NuPlayerDriver.cpp
+++ b/media/libmediaplayerservice/nuplayer/NuPlayerDriver.cpp
@@ -103,7 +103,7 @@
 }
 
 status_t NuPlayerDriver::prepare() {
-    sendEvent(MEDIA_SET_VIDEO_SIZE, 320, 240);
+    sendEvent(MEDIA_SET_VIDEO_SIZE, 0, 0);
     return OK;
 }