For anyone interested, I've ported over the patchset from 3.6.y to 3.7, repo is here on GitHub: https://github.com/Olipro/linux-RPi
For those interested, the process essentially consisted of cherry-picking the revlist of commits that exist on rpi-3.6.y but not 3.6.11 and then fixing up conflicts as required. A couple of additional commits exist at the head of the tree which fix compile errors, no promises on the dwc_otg.
I've tested it on my own Raspberry Pi, it boots my Gentoo install and I have not thus far run into any issues. But as ever, you are responsible for trying this out, YMMV.