arm64: dts: qcom: add Venus firmware node on Cheza

Cheza boards require this node to probe, so add it.

Reviewed-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Signed-off-by: Alexandre Courbot <acourbot@chromium.org>
Link: https://lore.kernel.org/r/20200108032623.113921-1-acourbot@chromium.org


Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>