LibBSD PowerPC motorola_shared BSP PCI Support

[chrisj at rtems.org]

Hello,

This patch for libbsd adds PCI support to the motorola_shared BSP family.

Tested on a MVME2700 (mvme2307) BSP:

nexus0: <RTEMS Nexus device>
pcib0 pcibus 0 on motherboard
pci0: <PCI bus> on pcib0
pci0: <bridge, HOST-PCI> at device 0.0 (no driver attached)
pci0: <bridge, PCI-ISA> at device 11.0 (no driver attached)
pci0: <mass storage, ATA> at device 11.1 (no driver attached)
pci0: <mass storage, SCSI> at device 12.0 (no driver attached)
pci0: <bridge> at device 13.0 (no driver attached)
pci0: <network, ethernet> at device 14.0 (no driver attached)

Chris