autotools: require that a configure script exists
There's no point inheriting autotools if you're not actually going to
run a configure script, so make a missing configure script fatal.
(From OE-Core rev: 6d327a39befae44a88a812bdf4acde800dcee57b)
Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>