MdePkg/PciSegmentLib: Add instances that consumes PciSegmentInfoLib
The patch adds two PciSegmentLib instances that consumes
PciSegmentInfoLib to provide multiple segments PCI configuration
access.
BasePciSegmentLibSegmentInfo instance is a BASE library.
DxeRuntimePciSegmentLibSegmentInfo instance is to be linked with
runtime drivers to provide not only boot time but also runtime
PCI configuration access.