Upstream: HOST_WORDS_ALIGNED -> WORDS_ALIGNED

Change-Id: Ica9022695d83fb48a8c25fdb1e1f0dc1c63747ff
diff --git a/target-arm/neon_helper.c b/target-arm/neon_helper.c
index 35fbaf5..f32ecd6 100644
--- a/target-arm/neon_helper.c
+++ b/target-arm/neon_helper.c
@@ -49,7 +49,7 @@
 { \
     type v1; \
 } neon_##name;
-#ifdef WORDS_BIGENDIAN
+#ifdef HOST_WORDS_BIGENDIAN
 #define NEON_TYPE2(name, type) \
 typedef struct \
 { \