Bluetooth: Make hci a child of the corresponding tty device.

Make /sys/class/bluetooth/hciX a symlink to
path under corresponding tty.

Signed-off-by: Andrei Warkentin <andreiw@motorola.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
diff --git a/drivers/bluetooth/hci_ldisc.c b/drivers/bluetooth/hci_ldisc.c
index 3c6cabc..48ad2a7 100644
--- a/drivers/bluetooth/hci_ldisc.c
+++ b/drivers/bluetooth/hci_ldisc.c
@@ -398,6 +398,7 @@
 	hdev->flush = hci_uart_flush;
 	hdev->send  = hci_uart_send_frame;
 	hdev->destruct = hci_uart_destruct;
+	hdev->parent = hu->tty->dev;
 
 	hdev->owner = THIS_MODULE;