Fix a clang-tidy misc-include-cleaner warning

no header providing "TX_4X4" is directly included

Change-Id: I507b2c937eef405a7cab73cd672a074e1e29e0ca
diff --git a/test/quantize_func_test.cc b/test/quantize_func_test.cc
index cbcaba1..61f26ea 100644
--- a/test/quantize_func_test.cc
+++ b/test/quantize_func_test.cc
@@ -19,6 +19,7 @@
 #include "config/av1_rtcd.h"
 
 #include "aom/aom_codec.h"
+#include "aom_dsp/txfm_common.h"
 #include "aom_ports/aom_timer.h"
 #include "av1/encoder/encoder.h"
 #include "av1/common/scan.h"