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.pl


Signed-off-by: Bjorn Andersson <andersson@kernel.org>