dt-bindings: white-space cleanups

Remove trailing white-spaces and trailing blank lines (yamllint with
default options does not like them).

Suggested-by: Corentin Labbe <clabbe@baylibre.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220402192819.154691-1-krzysztof.kozlowski@linaro.org

dt-bindings: Use correct vendor prefix for Asahi Kasei Corp.

The old "ak" vendor prefix that was never officially accepted was still
being used in some examples. Convert to the correct vendor prefix (i.e.
"asahi-kasei").

Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/20211206144802.217073-1-thierry.reding@gmail.com
Signed-off-by: Rob Herring <robh@kernel.org>

dt-bindings:i2c:i2c-gate: txt to yaml conversion

This file provides very little in the way of actual schema but
does provide a convenient intro to what an i2c-gate node actually
represents.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Peter Rosin <peda@axentia.se>
Cc: Wolfram Sang <wsa@the-dreams.de>
Link: https://lore.kernel.org/r/20201031181801.742585-2-jic23@kernel.org
Link: https://lore.kernel.org/r/20201128173343.390165-2-jic23@kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>