Move several *_SUPER_MAGIC symbols to include/linux/magic.h.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/fs/hpfs/super.c b/fs/hpfs/super.c
index f798480..8fe51c3 100644
--- a/fs/hpfs/super.c
+++ b/fs/hpfs/super.c
@@ -11,6 +11,7 @@
 #include <linux/parser.h>
 #include <linux/init.h>
 #include <linux/statfs.h>
+#include <linux/magic.h>
 
 /* Mark the filesystem dirty, so that chkdsk checks it when os/2 booted */