Bug#570268: sky2 fails when memory exceeds 2GB on amd64 kernel

[Dale and Cheryl Schroeder <dale@texasbb.com>]

I tested another network card, a Netgear GA311 which uses the r8169 driver.
With this card, all 4GB of memory is recognized and the system 
successfully boots.
This would seem to rule out the BIOS and points to sky2 on the Marvell 
m/b chip
being my problem.

Obviously, the new card doesn't resolve the bug, but it does solve my 
problem.

Dale