Bluetooth: Track discovery type

This patch adds to struct discovery_state the field 'type' so that
we can track the discovery type the device is performing.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>

net/bluetooth/mgmt.c

@@ -2192,7 +2192,9 @@ static int start_discovery(struct sock *sk, u16 index,
 		goto failed;
 	}
 
-	switch (cp->type) {
+	hdev->discovery.type = cp->type;
+
+	switch (hdev->discovery.type) {
 	case DISCOV_TYPE_BREDR:
 	case DISCOV_TYPE_INTERLEAVED:
 		err = hci_do_inquiry(hdev, INQUIRY_LEN_BREDR);