Linaro anyone?

Just adding it to manifest for now.  Obviously, there'll be other changes needed.  @ctfrommn, any interest in this?  It wouldn't be terribly hard to implement.  There's very few kernel changes needed (just some warning ignores for gcc-wrapper.py).

Some of the repos, we can just sync directly from Linaro if there's nothing PSX changes on top of AOSP, since Linaro stays in line for the most part with AOSP changes.