lib: Update i915_pciids.h

Sync to

commit 77a9e13b5a3c9c0cbd9e672e55970e7358a1a482
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Mon Mar 13 11:26:09 2017 +0000

    drm/i915: Add i810/i815 pci-ids for completeness

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2 files changed