sys: general adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

No functional change intended.

11 files changed, 22 insertions, 0 deletions

diff --git a/sys/netgraph/bluetooth/hci/ng_hci_cmds.c b/sys/netgraph/bluetooth/hci/ng_hci_cmds.c
index 4208a2c3914d..d757d9979c9d 100644
--- a/sys/netgraph/bluetooth/hci/ng_hci_cmds.c
+++ b/sys/netgraph/bluetooth/hci/ng_hci_cmds.c
@@ -3,6 +3,8 @@
  */
 
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) Maksim Yevmenkin <m_evmenkin@yahoo.com>
  * All rights reserved.
  *
diff --git a/sys/netgraph/bluetooth/hci/ng_hci_cmds.h b/sys/netgraph/bluetooth/hci/ng_hci_cmds.h
index 9addd14f8ae2..9290eddcc8cb 100644
--- a/sys/netgraph/bluetooth/hci/ng_hci_cmds.h
+++ b/sys/netgraph/bluetooth/hci/ng_hci_cmds.h
@@ -3,6 +3,8 @@
  */
 
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) Maksim Yevmenkin <m_evmenkin@yahoo.com>
  * All rights reserved.
  *
diff --git a/sys/netgraph/bluetooth/hci/ng_hci_evnt.c b/sys/netgraph/bluetooth/hci/ng_hci_evnt.c
index 647bfccabaa5..b0dae0e18ecf 100644
--- a/sys/netgraph/bluetooth/hci/ng_hci_evnt.c
+++ b/sys/netgraph/bluetooth/hci/ng_hci_evnt.c
@@ -3,6 +3,8 @@
  */
 
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) Maksim Yevmenkin <m_evmenkin@yahoo.com>
  * All rights reserved.
  *
diff --git a/sys/netgraph/bluetooth/hci/ng_hci_evnt.h b/sys/netgraph/bluetooth/hci/ng_hci_evnt.h
index d89cfd51bab8..1f11b416eae9 100644
--- a/sys/netgraph/bluetooth/hci/ng_hci_evnt.h
+++ b/sys/netgraph/bluetooth/hci/ng_hci_evnt.h
@@ -3,6 +3,8 @@
  */
 
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) Maksim Yevmenkin <m_evmenkin@yahoo.com>
  * All rights reserved.
  *
diff --git a/sys/netgraph/bluetooth/hci/ng_hci_main.c b/sys/netgraph/bluetooth/hci/ng_hci_main.c
index ae00ea6d18e8..ad3bd403de7f 100644
--- a/sys/netgraph/bluetooth/hci/ng_hci_main.c
+++ b/sys/netgraph/bluetooth/hci/ng_hci_main.c
@@ -3,6 +3,8 @@
  */
 
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) Maksim Yevmenkin <m_evmenkin@yahoo.com>
  * All rights reserved.
  *
diff --git a/sys/netgraph/bluetooth/hci/ng_hci_misc.c b/sys/netgraph/bluetooth/hci/ng_hci_misc.c
index c33b873403e0..02110b52b0a2 100644
--- a/sys/netgraph/bluetooth/hci/ng_hci_misc.c
+++ b/sys/netgraph/bluetooth/hci/ng_hci_misc.c
@@ -3,6 +3,8 @@
  */
 
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) Maksim Yevmenkin <m_evmenkin@yahoo.com>
  * All rights reserved.
  *
diff --git a/sys/netgraph/bluetooth/hci/ng_hci_misc.h b/sys/netgraph/bluetooth/hci/ng_hci_misc.h
index 4902c7e6ad57..e32a83de909e 100644
--- a/sys/netgraph/bluetooth/hci/ng_hci_misc.h
+++ b/sys/netgraph/bluetooth/hci/ng_hci_misc.h
@@ -3,6 +3,8 @@
  */
 
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) Maksim Yevmenkin <m_evmenkin@yahoo.com>
  * All rights reserved.
  *
diff --git a/sys/netgraph/bluetooth/hci/ng_hci_prse.h b/sys/netgraph/bluetooth/hci/ng_hci_prse.h
index fb4e8fa13a03..5d456ebea4de 100644
--- a/sys/netgraph/bluetooth/hci/ng_hci_prse.h
+++ b/sys/netgraph/bluetooth/hci/ng_hci_prse.h
@@ -3,6 +3,8 @@
  */
 
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2001 Maksim Yevmenkin <m_evmenkin@yahoo.com>
  * All rights reserved.
  *
diff --git a/sys/netgraph/bluetooth/hci/ng_hci_ulpi.c b/sys/netgraph/bluetooth/hci/ng_hci_ulpi.c
index 0d35245f91dc..bb85dc6e73c9 100644
--- a/sys/netgraph/bluetooth/hci/ng_hci_ulpi.c
+++ b/sys/netgraph/bluetooth/hci/ng_hci_ulpi.c
@@ -3,6 +3,8 @@
  */
 
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) Maksim Yevmenkin <m_evmenkin@yahoo.com>
  * All rights reserved.
  *
diff --git a/sys/netgraph/bluetooth/hci/ng_hci_ulpi.h b/sys/netgraph/bluetooth/hci/ng_hci_ulpi.h
index 4bf9f431080b..18fcb4e8dd40 100644
--- a/sys/netgraph/bluetooth/hci/ng_hci_ulpi.h
+++ b/sys/netgraph/bluetooth/hci/ng_hci_ulpi.h
@@ -3,6 +3,8 @@
  */
 
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) Maksim Yevmenkin <m_evmenkin@yahoo.com>
  * All rights reserved.
  *
diff --git a/sys/netgraph/bluetooth/hci/ng_hci_var.h b/sys/netgraph/bluetooth/hci/ng_hci_var.h
index 7909ce6299b2..d30a5694284f 100644
--- a/sys/netgraph/bluetooth/hci/ng_hci_var.h
+++ b/sys/netgraph/bluetooth/hci/ng_hci_var.h
@@ -3,6 +3,8 @@
  */
 
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2001 Maksim Yevmenkin <m_evmenkin@yahoo.com>
  * All rights reserved.
  *