2) Add ECP_PEI_PCI_CFG_PPI to EdkFrameworkPpiLib
3) Add PeiLibPciCfgModify which call PciCfg2. This function will used by modified Framework Module which will be working with a PI platform.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5260 6f19259b-4bc3-4df7-8a09-765794883524