dt-bindings: arm: qcom: add sa8775p-ride Rev 3

Document the compatible for revision 3 of the sa8775p-ride board.
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20240627114212.25400-2-brgl@bgdev.plSigned-off-by: Bjorn Andersson <andersson@kernel.org>

Documentation/devicetree/bindings/arm/qcom.yaml

@@ -895,6 +895,7 @@ properties:
       - items:
           - enum:
               - qcom,sa8775p-ride
+              - qcom,sa8775p-ride-r3
           - const: qcom,sa8775p
 
       - items: