xz: switch from public domain to BSD Zero Clause License (0BSD)

Remove the public domain notices and add SPDX license identifiers.

Change MODULE_LICENSE from "GPL" to "Dual BSD/GPL" because 0BSD should
count as a BSD license variant here.

The switch to 0BSD was done in the upstream XZ Embedded project because
public domain has (real or perceived) legal issues in some jurisdictions.

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Lasse Collin <[email protected]>
Reviewed-by: Sam James <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: Albert Ou <[email protected]>
Cc: Catalin Marinas <[email protected]>
Cc: Emil Renner Berthing <[email protected]>
Cc: Herbert Xu <[email protected]>
Cc: Joel Stanley <[email protected]>
Cc: Jonathan Corbet <[email protected]>
Cc: Jubin Zhong <[email protected]>
Cc: Jules Maselbas <[email protected]>
Cc: Krzysztof Kozlowski <[email protected]>
Cc: Michael Ellerman <[email protected]>
Cc: Palmer Dabbelt <[email protected]>
Cc: Paul Walmsley <[email protected]>
Cc: Randy Dunlap <[email protected]>
Cc: Rui Li <[email protected]>
Cc: Simon Glass <[email protected]>
Cc: Will Deacon <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

1 files changed, 1 insertions, 4 deletions

diff --git a/scripts/xz_wrap.sh b/scripts/xz_wrap.sh
index d06baf626abe..bb760b721b2c 100755
--- a/scripts/xz_wrap.sh
+++ b/scripts/xz_wrap.sh
@@ -1,13 +1,10 @@
 #!/bin/sh
+# SPDX-License-Identifier: 0BSD
 #
 # This is a wrapper for xz to compress the kernel image using appropriate
 # compression options depending on the architecture.
 #
 # Author: Lasse Collin <[email protected]>
-#
-# This file has been put into the public domain.
-# You can do whatever you want with this file.
-#
 
 BCJ=
 LZMA2OPTS=