[U-Boot] DT warnings and travis-ci problems

Hey guys,

It seems as if perhaps travis-ci has recently implemented a limit on log file size as the failure I see here: https://travis-ci.org/trini/u-boot/jobs/204620482 is unrelated, entirely, to the changes I'm testing. As my general hope here is that we'll fix these issues by re-syncing with the kernel, has progress been made on these currently, upstream? Thanks!