regulator: dt-bindings: rtq2208: Mark fixed LDO VOUT property as deprecated

Since the check for fixed LDO VOUT can be identified by the HW register,
mark the unnecessary property as deprecated.

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: ChiYuan Huang <cy_huang@richtek.com>
Link: https://patch.msgid.link/f813c7b49c152193f24198c4baf2c3f04cb0a74d.1742295647.git.cy_huang@richtek.com
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: ChiYuan Huang

Documentation/devicetree/bindings/regulator/richtek,rtq2208.yaml

@@ -77,6 +77,7 @@ properties:
 
         properties:
           richtek,fixed-microvolt:
+            deprecated: true
             description: |
               This property can be used to set a fixed operating voltage that lies outside
               the range of the regulator's adjustable mode.