[PATCH] kernel: bpf: Add SPDX license identifiers to a few files

[Tim Bird <tim.bird@sony.com>]

Add GPL-2.0 SPDX-License-Identifier lines to some files,
and remove a reference to COPYING, and boilerplate warranty
text, from offload.c.

Signed-off-by: Tim Bird <tim.bird@sony.com>
---
 kernel/bpf/offload.c | 12 +-----------
 kernel/bpf/ringbuf.c |  1 +
 kernel/bpf/token.c   |  1 +
 3 files changed, 3 insertions(+), 11 deletions(-)

diff --git a/kernel/bpf/offload.c b/kernel/bpf/offload.c
index 42ae8d595c2c..227f9b5f388b 100644
--- a/kernel/bpf/offload.c
+++ b/kernel/bpf/offload.c
@@ -1,16 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (C) 2017-2018 Netronome Systems, Inc.
- *
- * This software is licensed under the GNU General License Version 2,
- * June 1991 as shown in the file COPYING in the top-level directory of this
- * source tree.
- *
- * THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS"
- * WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
- * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE
- * OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME
- * THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
  */
 
 #include <linux/bpf.h>
diff --git a/kernel/bpf/ringbuf.c b/kernel/bpf/ringbuf.c
index f6a075ffac63..35ae64ade36b 100644
--- a/kernel/bpf/ringbuf.c
+++ b/kernel/bpf/ringbuf.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <linux/bpf.h>
 #include <linux/btf.h>
 #include <linux/err.h>
diff --git a/kernel/bpf/token.c b/kernel/bpf/token.c
index feecd8f4dbf9..7e4aa1e44b50 100644
--- a/kernel/bpf/token.c
+++ b/kernel/bpf/token.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <linux/bpf.h>
 #include <linux/vmalloc.h>
 #include <linux/file.h>
-- 
2.43.0