dt-bindings: hwmon: Add ina3221 documentation

Texas Instruments INA3221 is a triple-channel shunt and bus
voltage monitor. This patch adds a DT binding doc for it.

Signed-off-by: Nicolin Chen <[email protected]>
Reviewed-by: Rob Herring <[email protected]>
Signed-off-by: Guenter Roeck <[email protected]>
1 file changed