dt-bindings: trivial-devices: Add Murata D1U74T PSU

The Murata D1U74T-W series are hot-pluggable 1U AC/DC front-end
power supplies in the Intel CRPS-185 / OCP M-CRPS form factor.
Each variant delivers a 12 V main output plus a 12 V standby output
from a wide AC input (90-264 Vac) or HVDC supply, and includes an
internal variable-speed cooling fan and on-board voltage, current,
power, fan-speed, and temperature telemetry.

The host-side digital interface is a PMBus 1.2 port on I2C.  The
PSU's other electrical signals (status, alert, current-share) live
on the CRPS edge connector and are consumed by the chassis
controller rather than the host SoC, so there are no host-described
supplies, GPIOs, clocks, or interrupts.  Add the compatible to
trivial-devices.yaml rather than carrying a standalone binding file.

Signed-off-by: Abdurrahman Hussain <abdurrahman@nexthop.ai>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260514-d1u74t-v4-1-1f1ee7b002ec@nexthop.ai
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

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