script/scancpan: add -host & -target options

Signed-off-by: Francois Perrad <francois.perrad@gadz.org>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Try-Tiny: new package
Plack: all packages
moo: all packages
dancer2: all packages
demo

set BR2_ROOTFS_OVERLAY with $(BR2_EXTERNAL)/overlay/
dancer2 skeleton

$ dancer2 gen -a MyWeb::App
network interface eth0
defconfig