license: expand_wildcard_licenses: add AGPL-3.0* wildcard

The Yocto reference manual suggests also settings AGPL-3.0 in
INCOMPATIBLE_LICENSE.

https://www.yoctoproject.org/docs/latest/ref-manual/ref-manual.html#var-INCOMPATIBLE_LICENSE



Fixes: 724fc804 ("license: Rework INCOMPATIBLE_LICENSE wildcard handling")
Signed-off-by: Christian Eggers <ceggers@arri.de>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>