layer.conf: add LAYERSERIES_COMPAT
layer.conf: add LAYERSERIES_COMPAT

Signed-off-by: Martin Jansa <516df3ff67e1fa5d153800b15fb204c0a1a389dc@gmail.com>

bulwahn/meta-ros,bmwcarit/meta-ros,bmwcarit/meta-ros,bmwcarit/meta-ros,bmwcarit/meta-ros,bulwahn/meta-ros,bulwahn/meta-ros