arm64: dts: qcom: Add support for X1-based Surface Pro 11

arm64: dts: qcom: Add support for X1-based Surface Pro 11

Add device trees for the Qualcomm X1E and X1P-based Microsoft Surface
Pro 11 machines (codenamed 'Denali').

This device is very similar to the Surface Laptop 7 ('Romulus').

Use a similar strategy to x1-asus-zenbook-a14.dtsi so that we can create
x1e and x1p-specific flavors of the device tree without too much code
duplication.

Hardware support is similar to other X1 machines. The most notable
missing features are:

- Touchscreen and pen
- Cameras (and status LEDs)

Signed-off-by: Dale Whinham <daleyo@gmail.com>
Signed-off-by: Jérôme de Bretagne <jerome.debretagne@gmail.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Reviewed-by: Abel Vesa <abel.vesa@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20251220-surface-sp11-for-next-v6-4-81f7451edb77@gmail.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>