WIP: Google Pixel support

Based off of @ojbr's changes, but I think he's MIA, so I'll have to do this myself.

Got rid of "dtb not found" errors. Still need to get a Nexus debug cable, as of now, when it "boots", screen doesn't change, and it shuts down after 20-30 seconds.

This'll be easier than testing on thor, as I can pretty much dual-boot Android and pmOS due to A/B.

And no, this should NOT be named sailfish or marlin, since they both use the same defconfig, same kernel tree, same pretty much everything.