Ensure that the output file is created by processing the .debug files before the .elf files. TEST=Build and run on Galileo Gen2 Change-Id: Ief8d774249c9d8eb313f3d10f04d7e4f2e3cf491 Signed-off-by: Lee Leahy <leroy.p.leahy@intel.com> Reviewed-on: https://review.coreboot.org/16041 Tested-by: build bot (Jenkins) Reviewed-by: Martin Roth <martinroth@google.com>