John Baldwin 6e9f075a26 Add support for Oxford PCI Express Expresso family devices.
For these devices, the number of supported ports is read from a register
in BAR 0.

PR:		kern/134878
Submitted by:	David Wood  david of wood2 org uk
MFC after:	1 week
2011-04-28 19:19:25 +00:00
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