soletta: Add mosquitto as dependency
soletta: Add mosquitto as dependency

Soletta depends on mosquitto library to build with mqtt support

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

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