Bluetooth: Move HCI_ADVERTISING handling into mgmt.c

We'll soon need to make decisions on toggling the HCI_ADVERTISING flag
based on pending mgmt_set_powered commands. Therefore, move the handling
from hci_event.c into mgmt.c.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 9865e52..d39e57e 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -4832,6 +4832,14 @@
 		new_settings(hdev, NULL);
 }
 
+void mgmt_advertising(struct hci_dev *hdev, u8 advertising)
+{
+	if (advertising)
+		set_bit(HCI_ADVERTISING, &hdev->dev_flags);
+	else
+		clear_bit(HCI_ADVERTISING, &hdev->dev_flags);
+}
+
 void mgmt_write_scan_failed(struct hci_dev *hdev, u8 scan, u8 status)
 {
 	u8 mgmt_err = mgmt_status(status);