arm64: dts: qcom: Add Arduino Monza (VENTUNO Q) board support

arm64: dts: qcom: Add Arduino Monza (VENTUNO Q) board support

Add device tree support for the Arduino VENTUNO Q board,
based on the Qualcomm QCS8300 (Monaco) SoC.

The board features a Qualcomm Monza SoM and integrates various
peripherals, including:
- USB Type‑C connector with dual‑role support
- ADV7535 DSI‑to‑HDMI bridge
- MAX98091 audio codec
- 2.5G Ethernet PHY (HSGMII)
- PCIe0 (to onboard WiFi chipset and USB bridge)
- PCIe1 (to M2/nvme)
- Button (via GPIO‑keys)

Signed-off-by: Loic Poulain <loic.poulain@oss.qualcomm.com>
Co-developed-by: Srinivas Kandagatla <srinivas.kandagatla@oss.qualcomm.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@oss.qualcomm.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260313103824.2634519-7-srinivas.kandagatla@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>