dt-bindings: trivial-devices: Add lt7182s

Add Analog Devices LT7182S Dual Channel Step-Down Switcher.
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Documentation/devicetree/bindings/trivial-devices.yaml

@@ -41,6 +41,8 @@ properties:
           - adi,adp5585-02
             # Analog Devices ADP5589 Keypad Decoder and I/O Expansion
           - adi,adp5589
+            # Analog Devices LT7182S Dual Channel 6A, 20V PolyPhase Step-Down Silent Switcher
+          - adi,lt7182s
             # AMS iAQ-Core VOC Sensor
           - ams,iaq-core
             # i2c serial eeprom (24cxx)