e1000: Add support for Kaby Lake IDs

Fixup some errors when transitioning to/from low power states.

Submitted by: erj
Reviewed by: Jeffery Piper (jeffrey.e.piper@intel.com)
MFC after: 3 days
Relnotes: yes
Sponsored by: Intel Corporation
Differential Revision: https://reviews.freebsd.org/D7478