Everything we need for `rust-snapshot.inc` exists in `src/stage0.json`,
so just read that to generate it.
(From OE-Core rev: a07008da8b02165d271a457e4c215f35cb15b94c)
Signed-off-by: Alex Kiernan <alex.kiernan@gmail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>