yv12config: fix highbitdepth build

Change-Id: Ie8a4caae19fb514d5bd22e0ae35ca0edcd3484ae
diff --git a/vpx_scale/generic/yv12config.c b/vpx_scale/generic/yv12config.c
index fde5044..00a8c16 100644
--- a/vpx_scale/generic/yv12config.c
+++ b/vpx_scale/generic/yv12config.c
@@ -10,7 +10,6 @@
 
 #include <assert.h>
 
-#include "./vpx_config.h"
 #include "vpx_scale/yv12config.h"
 #include "vpx_mem/vpx_mem.h"
 #if CONFIG_VP9 && CONFIG_VP9_HIGHBITDEPTH
diff --git a/vpx_scale/yv12config.h b/vpx_scale/yv12config.h
index c5ac44b..b9f13fd 100644
--- a/vpx_scale/yv12config.h
+++ b/vpx_scale/yv12config.h
@@ -15,6 +15,7 @@
 extern "C" {
 #endif
 
+#include "./vpx_config.h"
 #include "vpx/vpx_codec.h"
 #include "vpx/vpx_frame_buffer.h"
 #include "vpx/vpx_integer.h"