vpx_temporal_svc_encoder: Adjust default qp-max setting for vp9.

Change-Id: Iada495f05193a1f645a5405ad792931f4d9113ab
diff --git a/examples/vpx_temporal_svc_encoder.c b/examples/vpx_temporal_svc_encoder.c
index ef24d44..7a582d2 100644
--- a/examples/vpx_temporal_svc_encoder.c
+++ b/examples/vpx_temporal_svc_encoder.c
@@ -602,6 +602,8 @@
   cfg.rc_resize_allowed = 0;
   cfg.rc_min_quantizer = 2;
   cfg.rc_max_quantizer = 56;
+  if (strncmp(encoder->name, "vp9", 3) == 0)
+    cfg.rc_max_quantizer = 52;
   cfg.rc_undershoot_pct = 50;
   cfg.rc_overshoot_pct = 50;
   cfg.rc_buf_initial_sz = 500;