[PATCH 09/14] drm: Update todo.rst

[Sam Ravnborg]

Hi Daniel.

> -Note that this is well in progress, but ``drmP.h`` is still huge. The updated
> -plan is to switch to per-file driver API headers, which will also structure
> -the kerneldoc better. This should also allow more fine-grained ``#include``
> -directives.
> +The DRM subsystem originally had only one huge globale header, ``drmP.h``. This
globale => global

> +is not split up, but many source files still include it. The remainig part of
remainig => remaining

	Sam