dt-bindings: hwmon: Add Sophgo SG2044 external hardware monitor support

The MCU device on SG2044 exposes the same interface as SG2042, which is
already supported by the kernel.

Add compatible string for monitor device of SG2044.

Signed-off-by: Inochi Amaoto <inochiama@gmail.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20250413223507.46480-7-inochiama@gmail.com


Signed-off-by: Guenter Roeck <linux@roeck-us.net>