Although the submodules' histories have been fetched during the
do_fetch() phase, the mechanics used to clone the workdir copy
of the repo haven't been transferring the actual .git/modules
directory from the repo fetched into downloads/ during the
fetch task.
Fix that, and for good measure also explicitly tell Git to avoid
hitting the network during do_unpack() of the submodules.
[YOCTO #12739]
(Bitbake rev: 11b6a5d5c1b1bb0ce0c5bb3983610d13a3e8f84a)
Signed-off-by: Matt Hoosier <matt.hoosier@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>