Add support for upcoming BCM5725 (ASIC 5762) controller.  This is a
new 1Gb server controller chip that will be going into production
soon.
BCM5725 combines MAC with triple-speed PHY, a Network Controller
Sideband Interface (NC-SI) and on-chip memory buffer in a single
device.  BCM5725 has an Application Processing Engine (APE) that is
capable of on-chip management and offloading features.  BCM5725
supports high-precision clock, time stamp registers for
receive/transmit packets and programmable trigger inputs and
watchdog timeouts. These new features are not yet supported by
bge(4).
Many thanks to Broadcom for continuing to support FreeBSD!

Submitted by:	Geans Pin geanspin@Broacom (initial version)
Reviewed by:	Geans Pin geanspin@Broacom
H/W donated by:	Broadcom