fs/inode.c: fix kernel-doc warning

Fix kernel-doc warning in fs/inode.c:

  ../fs/inode.c:1606: warning: No description found for parameter 'inode'
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

fs/inode.c

@@ -1597,6 +1597,7 @@ static int update_time(struct inode *inode, struct timespec *time, int flags)
 /**
  *	touch_atime	-	update the access time
  *	@path: the &struct path to update
+ *	@inode: inode to update
  *
  *	Update the accessed time on an inode and mark it for writeback.
  *	This function automatically handles read only file systems and media,