dt-bindings: trivial-devices: Add undocumented hwmon devices

There's a bunch of undocumented, but already in use trivial hwmon
devices. Most are just variants of existing trivial devices.

Acked-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20250701-dt-hwmon-compatibles-v1-6-ad99e65cf11b@kernel.org


Signed-off-by: Rob Herring (Arm) <robh@kernel.org>