We have a few recipes which only deploy files that go into the boot partition
and do not create packages to be installed into the rootfs. These recipes don't
need to run the usual packaging tasks so we can drop them to speed up the build
a little.
We also have a bunch of recipes that don't need the usual toolchain as they just
copy files or invoke native commands like `mkimage`. So to speed up the build a
little more we can set INHIBIT_DEFAULT_DEPS to avoid an unnecessary dependency
on the toolchain.
Signed-off-by: Paul Barker <pbarker@toganlabs.com>
