treewide: add license header and enable haslicense linter
Change-Id: I873a8d4082d75e8f813d8a726a41187eea7a065e
Reviewed-on: https://review.monogon.dev/c/monogon/+/3825
Tested-by: Jenkins CI
Reviewed-by: Leopold Schabel <leo@monogon.tech>
diff --git a/osbase/bringup/bringup.go b/osbase/bringup/bringup.go
index 5095bfb..6373b64 100644
--- a/osbase/bringup/bringup.go
+++ b/osbase/bringup/bringup.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
// Package bringup implements a simple wrapper which configures all default
// mounts, logging and the corresponding forwarders to tty0 and ttyS0. It
// then configures a new logtree and starts a supervisor to run the provided