This adds a smoke check for whether the rust toolchain actually
produces working executables across a range of architectures.
(From OE-Core rev: 14bb638b0df7acfa6aa89abf4625357f8cde886b)
Signed-off-by: Alexander Kanavin <alex@linutronix.de>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>