v3: Change PLD_ to UNIVERSAL_PAYLOAD_ based on Mike's comments.
v2: Separate the patch set from the patch that adds CLANGDWARF toolchain. Add missing function header commments. Change DEBUG_ERROR to DEBUG_INFO for information debug message.
Ray Ni (3): MdeModulePkg/UniversalPayload: Add definition for extra info in payload UefiPayloadPkg: Add PayloadLoaderPeim which can load ELF payload PeiCore: Remove assertion when failing to load PE image