Use NuPlayer for media playback everywhere

if media.stagefright.use-nuplayer is set to true.

Change-Id: Ibb217e7d7d5195b7feeea557554fe78e1585744c
diff --git a/media/libmediaplayerservice/MetadataRetrieverClient.cpp b/media/libmediaplayerservice/MetadataRetrieverClient.cpp
index 7dbb57f..776d288 100644
--- a/media/libmediaplayerservice/MetadataRetrieverClient.cpp
+++ b/media/libmediaplayerservice/MetadataRetrieverClient.cpp
@@ -87,6 +87,7 @@
     sp<MediaMetadataRetrieverBase> p;
     switch (playerType) {
         case STAGEFRIGHT_PLAYER:
+        case NU_PLAYER:
         {
             p = new StagefrightMetadataRetriever;
             break;