Bluetooth: Add LE features to debugfs if available

For LE capable controllers at the special LE features page to the
debugfs list with all the other features pages.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>

net/bluetooth/hci_core.c

@@ -65,13 +65,20 @@ static int features_show(struct seq_file *f, void *ptr)
 
 	hci_dev_lock(hdev);
 	for (p = 0; p < HCI_MAX_PAGES && p <= hdev->max_page; p++) {
-		seq_printf(f, "Page %u: 0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x "
+		seq_printf(f, "%2u: 0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x "
 			   "0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x\n", p,
 			   hdev->features[p][0], hdev->features[p][1],
 			   hdev->features[p][2], hdev->features[p][3],
 			   hdev->features[p][4], hdev->features[p][5],
 			   hdev->features[p][6], hdev->features[p][7]);
 	}
+	if (lmp_le_capable(hdev))
+		seq_printf(f, "LE: 0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x "
+			   "0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x\n",
+			   hdev->le_features[0], hdev->le_features[1],
+			   hdev->le_features[2], hdev->le_features[3],
+			   hdev->le_features[4], hdev->le_features[5],
+			   hdev->le_features[6], hdev->le_features[7]);
 	hci_dev_unlock(hdev);
 
 	return 0;