Enable retransmission of UDP packets in case we want to use it

in our upcoming wfd _sink_ implementation.

Change-Id: I4509c30d5a7b992bc841b73d63db902bbcf8f76a
related-to-bug: 7638155
diff --git a/media/libstagefright/wifi-display/source/Sender.h b/media/libstagefright/wifi-display/source/Sender.h
index 73e3d19..66951f7 100644
--- a/media/libstagefright/wifi-display/source/Sender.h
+++ b/media/libstagefright/wifi-display/source/Sender.h
@@ -25,7 +25,7 @@
 #define LOG_TRANSPORT_STREAM            0
 #define TRACK_BANDWIDTH                 0
 
-#define ENABLE_RETRANSMISSION                   0
+#define ENABLE_RETRANSMISSION                   1
 
 // If retransmission is enabled the following define determines what
 // kind we support, if RETRANSMISSION_ACCORDING_TO_RFC_XXXX is 0