Update to vpx_temporal_svc_encoder:

Add set_tune_content control setting.

Change-Id: I8f7af8e8e9bc35a2d1546c5a0b2dd14be3cce750

examples/vpx_temporal_svc_encoder.c

@@ -692,6 +692,7 @@ int main(int argc, char **argv) {
     vpx_codec_control(&codec, VP9E_SET_FRAME_PERIODIC_BOOST, 0);
     vpx_codec_control(&codec, VP9E_SET_NOISE_SENSITIVITY, 0);
     vpx_codec_control(&codec, VP8E_SET_STATIC_THRESHOLD, 0);
+    vpx_codec_control(&codec, VP9E_SET_TUNE_CONTENT, 0);
     vpx_codec_control(&codec, VP9E_SET_TILE_COLUMNS, (cfg.g_threads >> 1));
     if (vpx_codec_control(&codec, VP9E_SET_SVC, layering_mode > 0 ? 1: 0))
       die_codec(&codec, "Failed to set SVC");