intel/skl: Add SKL PCI ids

v2: Add more PCI IDs (Michael H. Nguyen)
v3: Synchronize one more with the kernel PCI IDs (Damien)

Reviewed-by: Thomas Wood <thomas.wood@intel.com>
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Ben Widawsky <benjamin.widawsky@intel.com>
Signed-off-by: Michael H. Nguyen <michael.h.nguyen@intel.com>