[OE-core] [PATCH v2] image_types.bbclass: get rid of IMAGE_DEPENDS

[Leonardo Sandoval]

On Thu, 2017-06-15 at 19:19 +0300, Ed Bartosh wrote:

> +    if d.getVar('IMAGE_DEPENDS') != None:
> +        bb.fatal('IMAGE_DEPENDS is deprecated. Use do_image_<type>[depends] += "<recipe>:<task>>" instead')

s/>>/>/

also, should it be a warning instead?