arm64: dts: qcom: sdm845-oneplus-common: set venus firmware path

Enable loading the Qualcomm Venus video accelerator firmware on OnePlus sdm845 devices.

Signed-off-by: Kate Doeen <jld3103yt@gmail.com>
Reviewed-by: Caleb Connolly <caleb@connolly.tech>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20211028101957.106034-1-jld3103yt@gmail.com