arm64: dts: qcom: sc7280: Add device node for APPS SMMU

Adding device node for APPS SMMU available on SC7280 chipset.
This is shared among the multiple client devices such as
display, video, usb, mmc and others.

Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>
Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Link: https://lore.kernel.org/r/1615461961-17716-9-git-send-email-rnayak@codeaurora.org


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