Bluetooth: controller: Conditionally compile slave role HCI cmds

Conditionally compile slave role related HCI commands.

Signed-off-by: Vinayak Kariappa Chettimada <vich@nordicsemi.no>

Author: cvinayak

subsys/bluetooth/controller/hci/hci.c

@@ -734,6 +734,7 @@ static void le_start_encryption(struct net_buf *buf, struct net_buf **evt)
 }
 #endif /* CONFIG_BLUETOOTH_CENTRAL */
 
+#if defined(CONFIG_BLUETOOTH_PERIPHERAL)
 static void le_ltk_req_reply(struct net_buf *buf, struct net_buf **evt)
 {
 	struct bt_hci_cp_le_ltk_req_reply *cmd = (void *)buf->data;
@@ -764,6 +765,7 @@ static void le_ltk_req_neg_reply(struct net_buf *buf, struct net_buf **evt)
 	rp->status = (!status) ?  0x00 : BT_HCI_ERR_CMD_DISALLOWED;
 	rp->handle = sys_le16_to_cpu(handle);
 }
+#endif /* CONFIG_BLUETOOTH_PERIPHERAL */
 
 static void le_read_remote_features(struct net_buf *buf, struct net_buf **evt)
 {
@@ -991,13 +993,15 @@ static int controller_cmd_handle(u8_t ocf, struct net_buf *cmd,
 		break;
 #endif /* CONFIG_BLUETOOTH_CENTRAL */
 
+#if defined(CONFIG_BLUETOOTH_PERIPHERAL)
 	case BT_OCF(BT_HCI_OP_LE_LTK_REQ_REPLY):
 		le_ltk_req_reply(cmd, evt);
 		break;
 
 	case BT_OCF(BT_HCI_OP_LE_LTK_REQ_NEG_REPLY):
 		le_ltk_req_neg_reply(cmd, evt);
 		break;
+#endif /* CONFIG_BLUETOOTH_PERIPHERAL */
 
 	case BT_OCF(BT_HCI_OP_LE_READ_REMOTE_FEATURES):
 		le_read_remote_features(cmd, evt);