soletta: fetch soletta source with submodules
soletta: fetch soletta source with submodules

This patch allows yocto to fetch Soletta source including already the
submodules. This might avoid network problems when updating the submodule.

Signed-off-by: Bruno Bottazzini <c92d71c55f49bd220e26b4af231350d119acce9e@intel.com>

brunobottazzini/meta-soletta,brunobottazzini/meta-soletta,solettaproject/meta-soletta,solettaproject/meta-soletta