arm64: dts: qcom: sm8350-hdk: enable GPU

Enable the GPU on the SM8350-HDK device. The ZAP shader is required for
the GPU to function properly.

Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230209133839.762631-7-dmitry.baryshkov@linaro.org