Fix forgotten license comments

diff --git a/util-linux/fdisk_sgi.c b/util-linux/fdisk_sgi.c
index 5a86a68..51cf30c 100644
--- a/util-linux/fdisk_sgi.c
+++ b/util-linux/fdisk_sgi.c
@@ -1,13 +1,13 @@
+/*
+ * Copyright (C) Andreas Neuper, Sep 1998.
+ *
+ * Licensed under GPLv2, see file LICENSE in this tarball for details.
+ */
+
 #if ENABLE_FEATURE_SGI_LABEL
 
 #define SGI_DEBUG 0
 
-/*
- * Copyright (C) Andreas Neuper, Sep 1998.
- *      This file may be modified and redistributed under
- *      the terms of the GNU Public License.
- */
-
 #define SGI_VOLHDR      0x00
 /* 1 and 2 were used for drive types no longer supported by SGI */
 #define SGI_SWAP        0x03