oeqa/sdk: add out-of-tree kernel module building test

oeqa/sdk: add out-of-tree kernel module building test

Validate that out-of-tree kernel module building using kernel-devsrc
works as expected.

This test uses cryptodev-linux as a idiomatic out of tree module. As the
latest release doesn't actually build with kernel 6.7+, use the same
commit that our recipe uses.

Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>