vp9_aq_360.c: add missing include

Change-Id: Ia8ac9b7023211b1da2294b0934cf076fb1cdc65f

vp9/encoder/vp9_aq_360.c

diff --git a/vp9/encoder/vp9_aq_360.c b/vp9/encoder/vp9_aq_360.c
index f8c187c..7d411f6 100644
--- a/vp9/encoder/vp9_aq_360.c
+++ b/vp9/encoder/vp9_aq_360.c
@@ -13,6 +13,7 @@
 #include "vpx_ports/mem.h"
 #include "vpx_ports/system_state.h"
 
+#include "vp9/encoder/vp9_aq_360.h"
 #include "vp9/encoder/vp9_aq_variance.h"
 
 #include "vp9/common/vp9_seg_common.h"