[ANN] U-Boot v2021.01-rc5 released

Hey all,

A day late, but here we are. I've taken a few small fixes in, and we've had a few small PRs. But I think things are looking good for release next week.

In terms of a changelog, git log --merges v2021.01-rc4..v2021.01-rc5 contains what I've pulled but as always, better PR messages and tags will provide better results here.

Thanks all!