staging: lustre: place linux header first in hash.c

Always place linux headers first in libcfs header files.
This avoid can potential build issues if any changes to
a libcfs header land that starts using a linux header
definition.
Signed-off-by: NJames Simmons <jsimmons@infradead.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/lustre/libcfs/hash.c

@@ -106,9 +106,9 @@
  *   Now we support both locked iteration & lockless iteration of hash
  *   table. Also, user can break the iteration by return 1 in callback.
  */
+#include <linux/seq_file.h>
 
 #include "../../include/linux/libcfs/libcfs.h"
-#include <linux/seq_file.h>
 
 #if CFS_HASH_DEBUG_LEVEL >= CFS_HASH_DEBUG_1
 static unsigned int warn_on_depth = 8;