[Bluetooth] Add UART driver for Texas Instruments' BRF63xx chips

Add support for Texas Instruments' HCI Low Level (HCILL) Bluetooth
protocol, which is a power management extension to H4. The HCILL is
widely used by TI's BRF63xx Bluetooth chips.

Signed-off-by: Ohad Ben-Cohen <ohad@bencohen.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
diff --git a/drivers/bluetooth/hci_ldisc.c b/drivers/bluetooth/hci_ldisc.c
index 6055b9c..e68821d 100644
--- a/drivers/bluetooth/hci_ldisc.c
+++ b/drivers/bluetooth/hci_ldisc.c
@@ -549,7 +549,10 @@
 #ifdef CONFIG_BT_HCIUART_BCSP
 	bcsp_init();
 #endif
-	
+#ifdef CONFIG_BT_HCIUART_LL
+	ll_init();
+#endif
+
 	return 0;
 }
 
@@ -563,6 +566,9 @@
 #ifdef CONFIG_BT_HCIUART_BCSP
 	bcsp_deinit();
 #endif
+#ifdef CONFIG_BT_HCIUART_LL
+	ll_deinit();
+#endif
 
 	/* Release tty registration of line discipline */
 	if ((err = tty_unregister_ldisc(N_HCI)))