linux-imx

dt-bindings: spi: meson: convert to yaml

Now that we have the DT validation in place, let's convert the device tree
bindings for the Amlogic SPI controllers over to two separate YAML schemas.

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Rob Herring <robh@kernel.org>