Update to vp8_scalable_patters.

Change-Id: I43ea65bf0a35ddb33a096a392e10b1869ea73f9a

vp8_scalable_patterns.c

diff --git a/vp8_scalable_patterns.c b/vp8_scalable_patterns.c
index e68c8ba..0677468 100644
--- a/vp8_scalable_patterns.c
+++ b/vp8_scalable_patterns.c
@@ -224,10 +224,9 @@
 
        flag_periodicity = cfg.ts_periodicity;
 
-       // Predict from L only.
+       // Update L only.
        layer_flags[0] = VPX_EFLAG_FORCE_KF  |
-                        VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF |
-                        VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF;
+                        VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF;
        break;
     }
     case 1: