arm64: dts: qcom: sm8250-mtp: add gpu/zap-shader node

Add firmware configuration for Adreno zap shader on sm8250-mtp.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20201203142105.841666-5-dmitry.baryshkov@linaro.org


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