For most recipes, deploying output files to the target is straightforward - the files go into the root filesystem, but for the kernel it's not that easy. It's device-specific in a lot of cases. If we want people to be able to test their kernel changes though we should provide at least basic support. The following will need to be handled:

1) Kernel image itself
2) Modules
3) Update to any bootloader configuration if necessary

If the tool doesn't have enough information to determine what to do, then it should error out.