Fix a typo

BUG=aomedia:1003

Change-Id: Iddbd621b2f3bf514af13d669689a100f4d1df753

av1/encoder/tokenize.c

diff --git a/av1/encoder/tokenize.c b/av1/encoder/tokenize.c
index 947f05a..ef18298 100644
--- a/av1/encoder/tokenize.c
+++ b/av1/encoder/tokenize.c
@@ -24,7 +24,7 @@
 #include "av1/encoder/cost.h"
 #include "av1/encoder/encoder.h"
 #if CONFIG_LV_MAP
-#include "av1/encoder/encodetxb.c"
+#include "av1/encoder/encodetxb.h"
 #endif
 #include "av1/encoder/rdopt.h"
 #include "av1/encoder/tokenize.h"