gpio: mlxbf3: use capital "OR" for multiple licenses in SPDX

Documentation/process/license-rules.rst and checkpatch expect the SPDX
identifier syntax for multiple licenses to use capital "OR".  Correct it
to keep consistent format and avoid copy-paste issues.

Signed-off-by: Krzysztof Kozlowski <[email protected]>
Reviewed-by: Andy Shevchenko <[email protected]>
Signed-off-by: Bartosz Golaszewski <[email protected]>

Author: krzk

drivers/gpio/gpio-mlxbf3.c

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0-only or BSD-3-Clause
+// SPDX-License-Identifier: GPL-2.0-only OR BSD-3-Clause
 /* Copyright (C) 2022 NVIDIA CORPORATION & AFFILIATES */
 
 #include <linux/bitfield.h>