Bluetooth: Use system workqueue to schedule power_on

hdev->workqueue should be only for rx/tx, so move this one out.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index f4af6593..ffd1c01 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -415,7 +415,7 @@
 	}
 
 	if (cp->val)
-		queue_work(hdev->workqueue, &hdev->power_on);
+		schedule_work(&hdev->power_on);
 	else
 		schedule_work(&hdev->power_off.work);