dt-bindings: dma: qcom,gpi: Document the sm8750 GPI DMA engine

Document the GPI DMA engine on the sm8750 platform.

Signed-off-by: Melody Olvera <quic_molvera@quicinc.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20241021230500.2632527-1-quic_molvera@quicinc.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

Author: Melody Olvera

Documentation/devicetree/bindings/dma/qcom,gpi.yaml

@@ -37,6 +37,7 @@ properties:
               - qcom,sm8450-gpi-dma
               - qcom,sm8550-gpi-dma
               - qcom,sm8650-gpi-dma
+              - qcom,sm8750-gpi-dma
               - qcom,x1e80100-gpi-dma
           - const: qcom,sm6350-gpi-dma
       - items: