[U-Boot] u-boot-socfpga repository

Hello,

I'd be interested in maintaining u-boot-socfpga repository. So far, we don't have a repo for this platform and there is a large flurry of patches flying around without any kind of central point for them. I'd like to get your formal consent for starting this and if you agree, I'd start sending PR to Albert once the repo is in place.

Best regards, Marek Vasut