dt-bindings: pinctrl: {mediatek,ralink}: fix formatting

dt-bindings: pinctrl: {mediatek,ralink}: fix formatting

Change the style of description properties to plain style where there's no
need to preserve the line endings, and vice versa.

Fix capitalisation and indentation.

Fit the schemas to 80 columns for each line.

Signed-off-by: Arınç ÜNAL <arinc.unal@arinc9.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20230317213011.13656-16-arinc.unal@arinc9.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>