[PATCH NEXT v2 1/4] powerpc/pasemi: Add PCI initialisation for Nemo board.

[Darren Stevens]

The A-Eon Amigaone X1000's Nemo motherboard has an AMD SB600
connected to one of the PCI-e root ports on its PaSemi
Pwrficient 1628M SoC. Normally the SB600 southbridge would be
connected to a hidden PCI-e port on the system's northbridge,
and as a result doesn't fully comply with the PCI-e spec.
    
Add code to relax the PCI-e detection in both the root port
and the Linux kernel allowing on board devices to be detected.
    
Signed-off-by: Darren Stevens <Darren at stevens-zone.net>

---

Changes made:

v2: Replaced sb600_bus with a define, moved iob_mapbase into 
    sb600_set_flag()
    Created some register/Flag names (as I don't have the docs
    for the PA6T-1682M)
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