arm64: dts: qcom: x1e80100-hp-x14: dt for HP Omnibook X Laptop 14

arm64: dts: qcom: x1e80100-hp-x14: dt for HP Omnibook X Laptop 14

Introduce device tree for the HP Omnibook X Laptop 14-fe0750ng
(hp-omnibook-x14). It is a Laptop based on the Qualcomm Snapdragon
X Elite SoC. There seem to be other SKUs, some with Wifi-7 (WCN7850)
instead of Wifi-6E (WCN6855). This dt explicitly supports WCN6855,
I haven't found a good way yet to describe both.

link: https://www8.hp.com/h20195/V2/GetPDF.aspx/c08989140
Supported features:

- Keyboard (no function keys though)
- Display
- PWM brightness control (works via brightnessctl)
- Touchpad
- Touchscreen
- PCIe ports (pcie4, pcie6a)
- USB type-c, type-a
- WCN6855 Wifi-6E
- WCN6855 Bluetooth
- ADSP and CDSP
- X1 GPU
- GPIO Keys (Lid switch)
- Audio definition (works via USB)

Signed-off-by: Jens Glathe <jens.glathe@oldschoolsolutions.biz>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20241202-hp-omnibook-x14-v3-3-0fcd96483723@oldschoolsolutions.biz
Signed-off-by: Bjorn Andersson <andersson@kernel.org>