[U-Boot] [ANN] U-Boot v2015.04-rc3 released

Hey all,

I've pushed v2015.04-rc3 out to the repository and tarballs should exist soon.

We're 2 weeks after -rc2 came out. I need to go and look for outstanding odds and ends and such tomorrow and I think once Simon fixes the SPL series he's doing for BBB I'll be confident enough to pull that in.

As always, if anything is broken please speak up.

Thanks all!