Add a recipe to build UniversalPayload.elf, which uses a wrapper for the UniversalPayloadBuild.py that is hosted in the edk2 repository. Signed-off-by: Sean Rhodes <sean@starlabs.systems> Change-Id: I2aa318513244f576e07e72713fad3b4f7bd7c22e Reviewed-on: https://review.coreboot.org/c/coreboot/+/68183 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Lean Sheng Tan <sheng.tan@9elements.com>