A simple switch. Except we convert destroy_hvcs_struct to be
tty_port_operations->destruct...
Signed-off-by: NJiri Slaby <jslaby@suse.cz>
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>