dt-bindings: hwmon: ti,ina2xx: add ti,ina237

Add ti,ina237 binding to ti,ina2xx as they are very similar and may
share the same properties.

Signed-off-by: Richard Leitner <richard.leitner@linux.dev>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20231026-ina237-v2-2-dec44811a3c9@linux.dev


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