udf: move headers out include/linux/

There's really no reason to keep udf headers in include/linux as they're
not used by anything but fs/udf/.

This patch merges most of include/linux/udf_fs_i.h into fs/udf/udf_i.h,
include/linux/udf_fs_sb.h into fs/udf/udf_sb.h and
include/linux/udf_fs.h into fs/udf/udfdecl.h.

The only thing remaining in include/linux/ is a stub of udf_fs_i.h
defining the four user-visible udf ioctls.  It's also moved from
unifdef-y to headers-y because it can be included unconditionally now.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>
diff --git a/fs/udf/udf_i.h b/fs/udf/udf_i.h
index ccc52f1..d6d9a77 100644
--- a/fs/udf/udf_i.h
+++ b/fs/udf/udf_i.h
@@ -1,10 +1,32 @@
-#ifndef __LINUX_UDF_I_H
-#define __LINUX_UDF_I_H
+#ifndef _UDF_I_H
+#define _UDF_I_H
 
-#include <linux/udf_fs_i.h>
+struct udf_inode_info {
+	struct timespec		i_crtime;
+	/* Physical address of inode */
+	kernel_lb_addr		i_location;
+	__u64			i_unique;
+	__u32			i_lenEAttr;
+	__u32			i_lenAlloc;
+	__u64			i_lenExtents;
+	__u32			i_next_alloc_block;
+	__u32			i_next_alloc_goal;
+	unsigned		i_alloc_type : 3;
+	unsigned		i_efe : 1;
+	unsigned		i_use : 1;
+	unsigned		i_strat4096 : 1;
+	unsigned		reserved : 26;
+	union {
+		short_ad	*i_sad;
+		long_ad		*i_lad;
+		__u8		*i_data;
+	} i_ext;
+	struct inode vfs_inode;
+};
+
 static inline struct udf_inode_info *UDF_I(struct inode *inode)
 {
 	return list_entry(inode, struct udf_inode_info, vfs_inode);
 }
 
-#endif /* !defined(_LINUX_UDF_I_H) */
+#endif /* _UDF_I_H) */