[oe] Syntax for requiring a dependency task's deploy phase to be finished

[Matt Hoosier]

Hi,

I'm trying to build a kernel containing an initramfs linked directly
into the kernel binary. This is inspired by the recent discussion
here: building a minimal image with IMAGE_FSTYPE set to cpio.

I need to be sure that by the time the kernel's do_compile task
executes, the minimal image has been deploy to ${DEPLOY_DIR}/image.
What's the right way to write this dependency?

Thanks