[PATCH 1/2] dt-bindings: Add Apple SoC GPU

[Alyssa Rosenzweig]

> +      - description: Driver-opaque calibration blob
> +      - description: Calibration blob
...
> +      - const: hw-cal-a
> +      - const: hw-cal-b

For me these descriptions raise more questions than what they're meant
to describe... Maybe "First hardware calibration blob" and "Second
hardware calibration blob" or something. I don't fully get why A is
opaque and B is not, I don't think there's really such a distinction in
reality.

> +    description:
> +      MacOS version the current firmware is paired with, used to pick

macOS