Fix xfs debug build breakage by pushing xfs_error.h after

xfs_mount.h, which it depends on.
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Alex Elder <aelder@sgi.com>
Signed-off-by: Felix Blyakher <felixb@sgi.com>

fs/xfs/support/debug.c

@@ -17,7 +17,6 @@
  */
 #include <xfs.h>
 #include "debug.h"
-#include "xfs_error.h"
 
 /* xfs_mount.h drags a lot of crap in, sorry.. */
 #include "xfs_sb.h"
@@ -25,6 +24,7 @@
 #include "xfs_ag.h"
 #include "xfs_dmapi.h"
 #include "xfs_mount.h"
+#include "xfs_error.h"
 
 static char		message[1024];	/* keep it off the stack */
 static DEFINE_SPINLOCK(xfs_err_lock);