WIC are supported only for disco and eval machine.
To enable it uncomment the preconized line on specific
machine.
Signed-off-by: Christophe Priouzeau <christophe.priouzeau@st.com>
Setting IMAGE_ROOTFS_SIZE to the same value as
IMAGE_ROOTFS_MAXSIZE requires IMAGE_OVERHEAD_FACTOR
to be 1 (it was the case) and IMAGE_ROOTFS_EXTRA_SPACE
to be 0 (it was missing).
Signed-off-by: José Bollo <jose.bollo@iot.bzh>