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

Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/include/linux/msdos_fs.h b/include/linux/msdos_fs.h
index d9035c7..bae62d6 100644
--- a/include/linux/msdos_fs.h
+++ b/include/linux/msdos_fs.h
@@ -1,6 +1,8 @@
 #ifndef _LINUX_MSDOS_FS_H
 #define _LINUX_MSDOS_FS_H
 
+#include <linux/magic.h>
+
 /*
  * The MS-DOS filesystem constants/structures
  */
@@ -18,8 +20,6 @@
 #define CT_LE_L(v)	cpu_to_le32(v)
 
 
-#define MSDOS_SUPER_MAGIC 0x4d44 /* MD */
-
 #define MSDOS_ROOT_INO	1	/* == MINIX_ROOT_INO */
 #define MSDOS_DIR_BITS	5	/* log2(sizeof(struct msdos_dir_entry)) */