Do LUKS detection later in fstype

Similarly to the fix which was applied earlier which moved LVM detection
to the bottom of the list in fstype, we also need to move luks detection
to the end of the list since a LUKS signature leftover could co-exist
with a regular fs.

Regards,
David
diff --git a/usr/kinit/fstype/fstype.c b/usr/kinit/fstype/fstype.c
index cea219e..89203e1 100644
--- a/usr/kinit/fstype/fstype.c
+++ b/usr/kinit/fstype/fstype.c
@@ -236,19 +236,21 @@
  * LVM comes after all other filesystems since it's possible
  * that an old lvm signature is left on the disk if pvremove
  * is not used before creating the new fs.
+ *
+ * The same goes for LUKS as for LVM.
  */
 static struct imagetype images[] = {
 	{0, "gzip", gzip_image},
 	{0, "cramfs", cramfs_image},
 	{0, "romfs", romfs_image},
 	{0, "xfs", xfs_image},
-	{0, "luks", luks_image},
 	{1, "ext3", ext3_image},
 	{1, "ext2", ext2_image},
 	{1, "minix", minix_image},
 	{8, "reiserfs", reiserfs_image},
 	{64, "reiserfs", reiserfs_image},
 	{32, "jfs", jfs_image},
+	{0, "luks", luks_image},
 	{0, "lvm2", lvm2_image},
 	{1, "lvm2", lvm2_image},
 	{-1, "swap", swap_image},