dt-bindings: iio: dac: fix ad354xr output range

Fix output range, as per datasheet must be -2.5 to 7.5.
Signed-off-by: Angelo Dureghello <adureghello@baylibre.com>
Fixes: b0a96c5f ("dt-bindings: iio: dac: Add adi,ad3552r.yaml")
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20240503185528.2043127-1-adureghello@baylibre.orgSigned-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

Documentation/devicetree/bindings/iio/dac/adi,ad3552r.yaml

@@ -139,7 +139,7 @@ allOf:
                 Voltage output range of the channel as <minimum, maximum>
                 Required connections:
                   Rfb1x for: 0 to 2.5 V; 0 to 3V; 0 to 5 V;
-                  Rfb2x for: 0 to 10 V; 2.5 to 7.5V; -5 to 5 V;
+                  Rfb2x for: 0 to 10 V; -2.5 to 7.5V; -5 to 5 V;
               oneOf:
                 - items:
                     - const: 0