[PATCH v2] lib/crc64.c: add license information

[Coly Li <colyli@xxxxxxx>]

This patch adds MODULE_LICENSE("GPL") to remove a kernel build warning
information. Also as Andy Shevchenko suggested, adds a SPDX header into
lib/crc64.c file.

Signed-off-by: Coly Li <colyli@xxxxxxx>
Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
---
 lib/crc64.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/crc64.c b/lib/crc64.c
index ed0ffac7b26a..30d1bb58dd5c 100644
--- a/lib/crc64.c
+++ b/lib/crc64.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group (Any
  * use permitted, subject to terms of PostgreSQL license; see.)
@@ -135,3 +136,4 @@ uint64_t crc64(const void *data, size_t len)
 EXPORT_SYMBOL_GPL(crc64);
 
 MODULE_DESCRIPTION("CRC64 calculations");
+MODULE_LICENSE("GPL");
-- 
2.16.3

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