layer.conf: Increase layer priority higher than meta-luneui
layer.conf: Increase layer priority higher than meta-luneui

meta-luneui builds a VERY old extra-cmake-modules causing trouble here

Signed-off-by: Andreas Müller <d72a15aaaca3a7afa855175c72dc8d2e05931e32@googlemail.com>

schnitzeltony/meta-qt5-extra,schnitzeltony/meta-qt5-extra,schnitzeltony/meta-qt5-extra