MFP4: 221483, 221567, 221568, 221670, 221677, 221678, 221800, 221801,
221804, 221805, 222004, 222006, 222055, 222820, 1135077, 1135118, 1136259

Add atse(4), a driver for the Altera Triple Speed Ethernet MegaCore.

The current driver support gigabit Ethernet speeds only and works with
the MegaCore only in the internal FIFO configuration in the soon to be
open sourced BERI CPU configuration.

Submitted by:	bz
MFC after:	3 days
Sponsored by:	DARPA/AFRL
MFP4: 1136252

Add an option ATSE_CFI_HACK to allow memory mapped CFI devices to have
their address range allocated sharable so that atse(4) can find it's
Ethernet address in the expected location.

We intend to remove this hack once the BERI platform has a loader.