MAINTAINERS: add link to the Intel Graphics for Linux web site
MAINTAINERS: add link to the Intel Graphics for Linux web site

There's plenty of drm/i915 related hardware and software documentation,
and firmware downloads for the latest platforms.

Cc: Daniel Vetter <c1b6782c4af8f0673da8923a0702a1832e5940f4@ffwll.ch>
Signed-off-by: Jani Nikula <ba783f3beccaedfda693f41a15407d612a629408@intel.com>
Signed-off-by: Daniel Vetter <c1b6782c4af8f0673da8923a0702a1832e5940f4@ffwll.ch>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs