arm64: dts: qcom: qcm6490: Introduce the Particle Tachyon

arm64: dts: qcom: qcm6490: Introduce the Particle Tachyon

The Particle Tachyon is a single board computer with 5G connectivity
with AI accelerator, based on the Qualcomm QCM6490 platform.

Introduce the board, with support for UFS, USB, USB Type-C PD and
altmode (DisplayPort), GPU, charger/battery status, PCIe shield,
SD-card, and remoteprocs.

Signed-off-by: Bjorn Andersson <bjorn.andersson@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20250915-tachyon-v2-3-4f8b02a17512@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>