tty: include list & lockdep from tty_ldisc.h

We use structs list_head and lockdep_map as non-pointers in tty_ldisc.h.
So better have headers defining them explicitly included so that the
structs are always defined. Not only implicitly via random include
chains.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20210723103147.18250-5-jslaby@suse.cz


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>