rename WORDS_BIGENDIAN to HOST_WORDS_BIGENDIAN

Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
diff --git a/audio/audio.h b/audio/audio.h
index 3fb2c8b..fda2af3 100644
--- a/audio/audio.h
+++ b/audio/audio.h
@@ -38,7 +38,7 @@
     AUD_FMT_S32
 } audfmt_e;
 
-#ifdef WORDS_BIGENDIAN
+#ifdef HOST_WORDS_BIGENDIAN
 #define AUDIO_HOST_ENDIANNESS 1
 #else
 #define AUDIO_HOST_ENDIANNESS 0