[XFS] Sort out some cosmetic differences between XFS trees.

SGI-PV: 904196
SGI-Modid: xfs-linux-melb:xfs-kern:23719a

Signed-off-by: Nathan Scott <nathans@sgi.com>
diff --git a/fs/xfs/support/debug.c b/fs/xfs/support/debug.c
index 4ed7b69..4e1a5ec 100644
--- a/fs/xfs/support/debug.c
+++ b/fs/xfs/support/debug.c
@@ -31,6 +31,7 @@
  */
 
 #include "debug.h"
+#include "spin.h"
 
 #include <asm/page.h>
 #include <linux/sched.h>