firewire: implement broadcast_channel CSR for 1394a compliance

See IEEE 1394a clause 8.3.2.3.11.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>

drivers/firewire/fw-card.c

@@ -403,6 +403,7 @@ fw_card_initialize(struct fw_card *card, const struct fw_card_driver *driver,
 	card->current_tlabel = 0;
 	card->tlabel_mask = 0;
 	card->color = 0;
+	card->broadcast_channel = BROADCAST_CHANNEL_INITIAL;
 
 	INIT_LIST_HEAD(&card->transaction_list);
 	spin_lock_init(&card->lock);