Fix ifdef guard on av1_set_mode_cdfs() declaration.

Change-Id: I8f67a222c27d12fc43cdc2b0f568a3c429901801

av1/common/entropymode.h

diff --git a/av1/common/entropymode.h b/av1/common/entropymode.h
index 7578973..991b3c2 100644
--- a/av1/common/entropymode.h
+++ b/av1/common/entropymode.h
@@ -529,8 +529,10 @@
 extern int av1_switchable_interp_ind[SWITCHABLE_FILTERS];
 extern int av1_switchable_interp_inv[SWITCHABLE_FILTERS];
 
+#if !CONFIG_EC_ADAPT
 void av1_set_mode_cdfs(struct AV1Common *cm);
 #endif
+#endif
 
 void av1_setup_past_independence(struct AV1Common *cm);