Copy stable/10@r272459 to releng/10.1 as part of
the 10.1-RELEASE process.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

The NetBSD Foundation has granted permission to remove clause 3 and 4 from
the software.

Obtained from: NetBSD

Add icsphy(4), Integrated Circuit Systems PHY driver, ported from
NetBSD. ATM the only consumer of the PHY is XBox with nfe(4) driver.

Submitted by: Ed Schouten <ed@fxq.nl>
Tested by: Ed Schouten <ed@fxq.nl>