dt-bindings: 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 <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20240208105327.129159-1-krzysztof.kozlowski@linaro.orgSigned-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/display/panel/visionox,r66451.yaml

-# SPDX-License-Identifier: GPL-2.0-only or BSD-2-Clause
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
 %YAML 1.2
 ---
 $id: http://devicetree.org/schemas/display/panel/visionox,r66451.yaml#

Documentation/devicetree/bindings/usb/cypress,hx3.yaml

-# SPDX-License-Identifier: GPL-2.0-only or BSD-2-Clause
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
 %YAML 1.2
 ---
 $id: http://devicetree.org/schemas/usb/cypress,hx3.yaml#

include/dt-bindings/power/amlogic,c3-pwrc.h

-/* SPDX-License-Identifier: (GPL-2.0+ or MIT) */
+/* SPDX-License-Identifier: (GPL-2.0+ OR MIT) */
 /*
  * Copyright (c) 2023 Amlogic, Inc.
  * Author: hongyu chen1 <hongyu.chen1@amlogic.com>