dt-bindings: hwmon: tda38640: Add interrupt & regulator properties

tda38640 has a single regulator output along with CAT_FAULT# pin to
report internal events. Hence add properties for regulator & interrupt.

Signed-off-by: Naresh Solanki <naresh.solanki@9elements.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20240307113325.3800181-1-naresh.solanki@9elements.com


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