intel: sync i915_pciids.h with kernel

Add DG1 and clean-up VLV PCI IDs.

Align with kernel commits:
f2bde2546b81 ("drm/i915: Remove dubious Valleyview PCI IDs")
fd38cdb81105 ("drm/i915/dg1: Add DG1 PCI IDs")

Signed-off-by: Adam Miszczak <adam.miszczak@intel.com>
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
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meson-arch-daily

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