I tried to get NFC working on unofficial firmware, by copying all NFC related files from v10L to my phone and adding all NFC related lines in build.prop.The rom hypothetically would be the same as Chacha_Ivanov's unofficial 10B
http://xdaforums.com/showpost.php?p=37505055&postcount=1037
I extracted files from kdz package, zipped and cooked them in anrdoid kitchen to make zip flashable.
the only change i made is to deodex files,
I'll build a non deodexed rom, and try if it had problems.
I'm planning to do the same job on an official European 10L rom, so that we gain NFC connectivity, and we can make the work on the rom from the beginning.
I got it to show up in settings, but I couldn't turn it on. I've either overlooked some files, or the kernel included in unofficial firmware simply doesn't support NFC