[Intel-gfx] Update PCI IDs

[Alexei Podtelezhnikov]

Hi all,

What follows are small changes to Haswell and Skylake lists. Some of
the changes are purely semantic because some devices are not even
tracked in the current Windows driver. Do they even exist? Perhaps, at
some point the discontinued lines can be cleaned. I also learned that,
from Haswell to Kabe Lake, the second least significant digit
corresponds to the GT tier minus 1, with a single exception of 0x5921
(GT2F).

Alexei