[PATCHv3] Fix copyright year

[libcamerabmw+ml at lsmod.de]

From: "Bernhard M. Wiedemann" <bwiedemann at suse.de>

without this patch, openSUSE's debugsource package would vary over time,
breaking reproducible builds.
Also a copyright of 2025 is factually wrong,
because nobody did anything copyright-worthy in that year.
If updating the year manually is too hard (it is optional anyway),
using the mtime of input file(s) could work as well.

By moving the year to tracepoints.h.in it can easily be updated
along with the content.

The diff was:
/usr/src/debug/libcamera-0.3.1/x86_64-suse-linux/include/libcamera/internal/tracepoints.h       2024-08-20 09:37:46.000000000 +0200
@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
 /*
- * Copyright (C) 2024, Google Inc.
+ * Copyright (C) 2025, Google Inc.

Signed-off-by: Bernhard M. Wiedemann <bwiedemann at suse.de>
---
 include/libcamera/internal/tracepoints.h.in | 2 +-
 utils/codegen/gen-tp-header.py              | 4 +---
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/include/libcamera/internal/tracepoints.h.in b/include/libcamera/internal/tracepoints.h.in
index f0962091..385f9f54 100644
--- a/include/libcamera/internal/tracepoints.h.in
+++ b/include/libcamera/internal/tracepoints.h.in
@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
 /*
- * Copyright (C) {{year}}, Google Inc.
+ * Copyright (C) 2020, Google Inc.
  *
  * Tracepoints with lttng
  *
diff --git a/utils/codegen/gen-tp-header.py b/utils/codegen/gen-tp-header.py
index 83606c32..6769c7ce 100755
--- a/utils/codegen/gen-tp-header.py
+++ b/utils/codegen/gen-tp-header.py
@@ -6,7 +6,6 @@
 #
 # Generate header file to contain lttng tracepoints
 
-import datetime
 import jinja2
 import pathlib
 import os
@@ -20,7 +19,6 @@ def main(argv):
     output = argv[2]
     template = argv[3]
 
-    year = datetime.datetime.now().year
     path = pathlib.Path(output).absolute().relative_to(argv[1])
 
     source = ''
@@ -28,7 +26,7 @@ def main(argv):
         source += open(fname, 'r', encoding='utf-8').read() + '\n\n'
 
     template = jinja2.Template(open(template, 'r', encoding='utf-8').read())
-    string = template.render(year=year, path=path, source=source)
+    string = template.render(path=path, source=source)
 
     f = open(output, 'w', encoding='utf-8').write(string)
 
-- 
2.46.1