arm64: dts: qcom: sc7180: Add A618 gpu dt blob

This patch adds the required dt nodes and properties
to enabled A618 GPU.

Tested-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Sharat Masetty <smasetty@codeaurora.org>
Link: https://lore.kernel.org/r/1588329036-18732-1-git-send-email-smasetty@codeaurora.org


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