Enable metadata scanning and retrieval through stagefright by default.

related-to-bug: 2295456
diff --git a/target/product/core.mk b/target/product/core.mk
index 546fd5c..210c83d 100644
--- a/target/product/core.mk
+++ b/target/product/core.mk
@@ -28,4 +28,6 @@
     Bugreport
 
 PRODUCT_PROPERTY_OVERRIDES += \
-    media.stagefright.enable-player=true
+    media.stagefright.enable-player=true \
+    media.stagefright.enable-meta=true   \
+    media.stagefright.enable-scan=true