Performance counters in 824x

[Andreas Oman <andoma%packetfront.com@localhost>]

Hello

As you might know, there are a quite impressive (at least, i think so :)
set of performance counters available in the 824x-chip.

I've written some code that programs and samples these counters.
PCI0,1,2,3 device usage, SDRAM bus usage, 60x bus usage, etc, etc

However, that code is part of a much larger kernel patch so I really
cant dump it "as is" here :)

Though, i could write a more genreal patch for the sandpoint-tree.

Anyone interested ?