cleanup compat ioctl handling

Merge all compat ioctl handling into compat_ioctl.c instead of splitting it
over compat.c and compat_ioctl.c.  This also allows to get rid of ioctl32.h

Signed-off-by: Christoph Hellwig <hch@lst.de>
Looks-good-to: Andi Kleen <ak@suse.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

fs/internal.h

@@ -9,8 +9,6 @@
  * 2 of the License, or (at your option) any later version.
  */
 
-#include <linux/ioctl32.h>
-
 struct super_block;
 
 /*
@@ -41,14 +39,6 @@ static inline int sb_is_blkdev_sb(struct super_block *sb)
  */
 extern void __init chrdev_init(void);
 
-/*
- * compat_ioctl.c
- */
-#ifdef CONFIG_COMPAT
-extern struct ioctl_trans ioctl_start[];
-extern int ioctl_table_size;
-#endif
-
 /*
  * namespace.c
  */