Add Coffeelake PCI IDs for U Skus

Add the Coffeelake PCI IDs based on the following kernel patch:

commit d29fe702c9cb682df99146d24d06e5455f043101
Author: Anusha Srivatsa <anusha.srivatsa@intel.com>
Date:   Thu Jun 8 16:41:07 2017 -0700

    drm/i915/cfl: Add Coffee Lake PCI IDs for U Sku.

Signed-off-by: Liwei Song <liwei.song@windriver.com>