Though the OpenRD-Base only has one gigabit Ethernet port,
both the OpenRD-Client and OpenRD-Ultimate each have two.

On the Ultimate, the PHY addresses are consecutive, but
on the Client they are not.

(based on
<62a0952ce368acc725063a00a5ec680a639d6c27.1301040318.git.julian.pidancet@citrix.com>
<ad0a2dc1e422698b005d6f0ceb6dd6f75a87e00a.1301040318.git.julian.pidancet@citrix.com>
)
Signed-off-by: NClint Adams <clint@debian.org>
Cc: Albert ARIBAUD <albert.u.boot@aribaud.net>
Cc: Prafulla Wadaskar <prafulla@marvell.com>
Cc: Julian Pidancet <julian.pidancet@citrix.com>