arm64: dts: qcom: add initial device-tree for Microsoft Surface Duo

Microsoft Surface Duo is based on SM8150 chipset. This new Device Tree
is a copy of sm8150-mtp with a the addition of the volume up key and
relevant i2c nodes.

Signed-off-by: Felipe Balbi <felipe.balbi@microsoft.com>
Link: https://lore.kernel.org/r/20210603122923.1919624-1-balbi@kernel.org


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