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ff228f745c
Allow pci_find_next() to discover devices beyond the first PCI segment, by generalising pci_num_bus() (which implicitly assumes that there is only a single PCI segment) with pci_discover() (which has the ability to return an arbitrary contiguous chunk of PCI bus:dev.fn address space). Signed-off-by: Michael Brown <mcb30@ipxe.org>