drm/i915: Add remaining conversions to GRAPHICS_VER

For some reason coccinelle misses a few cases in header files with calls to
INTEL_GEN()/IS_GEN(). Do a manual conversion for those.

Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210605155356.4183026-6-lucas.demarchi@intel.com
Link: https://patchwork.freedesktop.org/patch/msgid/20210606045050.103862-3-lucas.demarchi@intel.com