image.bbclass: run wicenv task only for wic images
Currently do_wicenv task is run for all images. However, its
result is used only to produce wic image. It's better to
run this task only for wic images. If another rootfs is
required to produce wic image, dependency to its do_wicenv
must be added to the wic image recipy.
Stopped running do_wicenv for all images. Added explicit
dependency to this task in wic-image-minimal recipe.
[YOCTO #9095]
Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
