Bluetooth: HCI: Fix definition of hci_rp_read_stored_link_key

Both max_num_keys and num_key are 2 octects:

BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E
page 1985:

  Max_Num_Keys:
  Size: 2 octets
  Range: 0x0000 to 0xFFFF

  Num_Keys_Read:
  Size: 2 octets
  Range: 0x0000 to 0xFFFF
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

include/net/bluetooth/hci.h

@@ -1047,8 +1047,8 @@ struct hci_cp_read_stored_link_key {
 } __packed;
 struct hci_rp_read_stored_link_key {
 	__u8     status;
-	__u8     max_keys;
-	__u8     num_keys;
+	__le16   max_keys;
+	__le16   num_keys;
 } __packed;
 
 #define HCI_OP_DELETE_STORED_LINK_KEY	0x0c12

include/net/bluetooth/hci_core.h

@@ -352,8 +352,8 @@ struct hci_dev {
 	__u16		lmp_subver;
 	__u16		voice_setting;
 	__u8		num_iac;
-	__u8		stored_max_keys;
-	__u8		stored_num_keys;
+	__u16		stored_max_keys;
+	__u16		stored_num_keys;
 	__u8		io_capability;
 	__s8		inq_tx_power;
 	__u8		err_data_reporting;

net/bluetooth/hci_event.c

@@ -256,8 +256,8 @@ static void hci_cc_read_stored_link_key(struct hci_dev *hdev,
 		return;
 
 	if (!rp->status && sent->read_all == 0x01) {
-		hdev->stored_max_keys = rp->max_keys;
-		hdev->stored_num_keys = rp->num_keys;
+		hdev->stored_max_keys = le16_to_cpu(rp->max_keys);
+		hdev->stored_num_keys = le16_to_cpu(rp->num_keys);
 	}
 }