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

Add in a new tool which prints a formatted v14 eeprom from an eeprom
hexdump.

This is a part replacement of the old athprom code, which tries
to both fetch and print the contents of an eeprom dump.

A tool to generate hexdumps from a running system will follow shortly.