Declare support for 5.1 AAC decoding

Bug 24982440

Change-Id: I60bb4649d43b45ee8de753b56c849c1670b07334
diff --git a/device.mk b/device.mk
index 87aeffc..73b08d3 100755
--- a/device.mk
+++ b/device.mk
@@ -332,6 +332,10 @@
     persist.audio.product.identify="angler" \
     persist.audio.fluence.speaker=true
 
+# Enable AAC 5.1 output
+PRODUCT_PROPERTY_OVERRIDES += \
+    media.aac_51_output_enabled=true
+
 #stereo speakers: orientation changes swap L/R channels
 PRODUCT_PROPERTY_OVERRIDES += \
     ro.audio.monitorRotation=true