[PATCH RESEND 1/6] domain: Add PCI configuration feature infrastructure

Add basic infrastructure for PCI configuration feature including: - New PCI configuration structure in domain_conf.h - Add VIR_DOMAIN_FEATURE_PCI enum and string conversion - Add pci field to virDomainDef to store PCI configuration This will be used to support QEMU's highmem-mmio-size machine prop

[PATCH RESEND 1/6] domain: Add PCI configuration feature infrastructure

Add basic infrastructure for PCI configuration feature including: - New PCI configuration structure in domain_conf.h - Add VIR_DOMAIN_FEATURE_PCI enum and string conversion - Add pci field to virDomainDef to store PCI configuration This will be used to support QEMU's highmem-mmio-size machine prop