dt-bindings: hwmon: reference common hwmon schema

dt-bindings: hwmon: reference common hwmon schema

Reference common hwmon schema in the bindings which have and customize
the "shunt-resistor-micro-ohms" property.  While this does not make the
binding smaller, it brings common definition of that property and also
allows generic "label" (parsed by Linux hwmon core code).

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20240224-dt-bindings-hwmon-common-v2-5-b446eecf5480@linaro.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>