Sounds like your getting real close to a solution.
AND - it does not have anything to do with building the kernel -
its the board name buried in some of the internal look-up paths.
I guess the entire firmware package is due for a massive "string search".
(My guessing was a near-miss, which is ok in horse shoes, nuclear weapons, and firmware development.)
(( the fuse in anti-aircraft nuclear warheads is actually called the: "near-miss fuse" , trust me, I kid you not. Think on it. you don't have to come very close with a tactical nuke to knock a plane/missile out of the air.
In fact, with 4 tons @ mach 2.5, you don't even need a warhead
Pretty pictures and some more facts:
https://en.wikipedia.org/wiki/RIM-8_Talos))