conf/layer.conf: Add thud to the LAYERSERIES_COMPAT
conf/layer.conf: Add thud to the LAYERSERIES_COMPAT

To support current master builds.

Signed-off-by: Aníbal Limón <4676e39632f2bd46f30a0e877949547c228033d4@linaro.org>

meta-rust/meta-rust,meta-rust/meta-rust,meta-rust/meta-rust,meta-rust/meta-rust,meta-rust/meta-rust