Bluetooth: Introduce HCI_QUIRK_SIMULTANEOUS_DISCOVERY

Some controllers allow both LE scan and BR/EDR inquiry to run at
the same time, while others allow only one, LE SCAN or BR/EDR
inquiry at given time.

Since this is specific to each controller, add a new quirk setting
that allows drivers to tell the core wether given controller can
do both LE scan and BR/EDR inquiry at same time.

Signed-off-by: Jakub Pawlowski <jpawlowski@google.com>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>

include/net/bluetooth/hci.h

@@ -160,6 +160,14 @@ enum {
 	 * during the hdev->setup vendor callback.
 	 */
 	HCI_QUIRK_STRICT_DUPLICATE_FILTER,
+
+	/* When this quirk is set, LE scan and BR/EDR inquiry is done
+	 * simultaneously, otherwise it's interleaved.
+	 *
+	 * This quirk can be set before hci_register_dev is called or
+	 * during the hdev->setup vendor callback.
+	 */
+	HCI_QUIRK_SIMULTANEOUS_DISCOVERY,
 };
 
 /* HCI device flags */