Add the modem DSP firmware for the Qualcomm APQ8096 boards. The files
come from the redistributable linux-board-support-package-r01700.1.zip
for the Dragonboard 820c. The file modem.mbn was generated from
segment files using the pil-squasher tool.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>