arm64: dts: qcom: add 'chassis-type' property

A new 'chassis-type' root node property has recently been approved for
the device-tree specification, in order to provide a simple way for
userspace to detect the device form factor and adjust their behavior
accordingly.

This patch fills in this property for end-user devices (such as laptops,
smartphones and tablets) based on Qualcomm ARM64 processors.

Signed-off-by: Arnaud Ferraris <arnaud.ferraris@collabora.com>
Reviewed-by: Stephan Gerhold <stephan@gerhold.net> # msm8916
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20211016102025.23346-4-arnaud.ferraris@collabora.com

arm64: dts: qcom: Add support for SONY Xperia X Performance / XZ / XZs (msm8996, Tone platform)

Add support for following boards:

- Xperia X Performance (dora)
- Xperia XZ (kagura)
- Xperia XZs (keyaki)

They are all based on the SONY Tone platform and feature largely similar hardware
with the most obvious differences being lack of USB-C and ToF sensor on Dora and
different camera sensor on Keyaki.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org>
Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Link: https://lore.kernel.org/r/20210608202143.247427-4-konrad.dybcio@somainline.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>