pinctrl: 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.

Correct also the placement of SPDX identifier in pinctrl-meson-axg
files:

WARNING: Misplaced SPDX-License-Identifier tag - use line 1 instead

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20230823085546.116494-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

pinctrl: meson-axg: Use the correct style for SPDX License Identifier

This patch corrects the SPDX License Identifier style in
header file related Meson axg SoC pinctrl driver.
It assigns explicit block comment for the SPDX License Identifier.

Changes made by using a script provided by Joe Perches here:
https://lkml.org/lkml/2019/2/7/46.

Suggested-by: Joe Perches <joe@perches.com>
Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
Link: https://lore.kernel.org/r/bcb86aa22d8d8499502bbd8c54a364be24886a86.1574871463.git.nishadkamdar@gmail.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

pinctrl: meson-axg: Introduce a pinctrl pinmux ops for Meson-AXG SoC

The pin controller has been updated in the Amlogic Meson AXG series,
which use continuous 4-bit register to select function for each pin.
In order to support this, a new pinmux operations "meson_axg_pmx_ops"
has been added.

Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Xingyu Chen <xingyu.chen@amlogic.com>
Signed-off-by: Yixun Lan <yixun.lan@amlogic.com>
Reviewed-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>