The LTO patches seem to both compile and work/boot for me on the p2b.
I built it both on a debian sid x86_64 system and on the gentoo i686 setup I currently have for the p2b, both with the coreboot crossgcc-i386 toolchain.
It looks like it uses the system linker though (or something similiar, I don't remember exactly), at least according to the executable path it shows in the build log. I'm not sure if that's actually what's desired or if I'm just misinterpreting something.
It still looks like it needs more test reports yet, though I guess I'm not helping either by not commenting on gerrit.
Branden