ARM: dts: qcom: add device tree for Microsoft Lumia 640

Add an initial device tree for the Microsoft Lumia 640, codenamed
"dempsey".

Co-developed-by: Dominik Kobinski <dominikkobinski314@gmail.com>
Signed-off-by: Dominik Kobinski <dominikkobinski314@gmail.com>
Co-developed-by: Ivaylo Ivanov <ivo.ivanov.ivanov1@gmail.com>
Signed-off-by: Ivaylo Ivanov <ivo.ivanov.ivanov1@gmail.com>
Co-developed-by: Jack Matthews <jm5112356@gmail.com>
Signed-off-by: Jack Matthews <jm5112356@gmail.com>
Signed-off-by: Rayyan Ansari <rayyan@ansari.sh>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20230930221323.101289-4-rayyan@ansari.sh


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