[U-Boot] [ANN] U-Boot v2020.01-rc2 released

Hey all,

It's release day and here is v2020.01-rc2. Most of the outstanding patches I know about that are "big" are also in, except for the MTD clean-up series. That in turn depends on some ENV related clean-ups that I'm doing. As the expression goes, it's turtles all the way down.

Once again, for a changelog, git log --merges v2020.01-rc1..v2020.01-rc2 and as always, I ask for more details in the PRs people send me so I can put them in the merge commit.

I'm planning on doing -rc3 on the 25th of November with -rc4 on December 9th and -rc5 on December 23rd with the release scheduled on January 6th. Thanks all!