[Intel-gfx] [RFC v3] drm/i915: Eliminate devid sprinkle

[Chris Wilson]

Quoting Tvrtko Ursulin (2018-02-22 10:15:04)
> +#define INTEL_SUBPLATFORM_IRONLAKE_M (0)
> +
> +#define INTEL_SUBPLATFORM_PINEVIEW_G (0)
> +#define INTEL_SUBPLATFORM_PINEVIEW_M (1)

Looking at these, we can reduce these to IS_MOBILE. Clearer before or
after this conversion? Pretty orthogonal I think.
-Chris