We should test that mutliconfigs from a layer work, not just build/conf.
This adds such a test.
[YOCTO #13566]
(From OE-Core rev: 2306261fb85d5d03145989c3af9c6897111644ae)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>