dt-bindings: dmaengine: qcom: gpi: add compatible for sm8150

No functional changes, just adding a new compatible for a diferent
SoC.

Signed-off-by: Felipe Balbi <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Vinod Koul <[e-mail]>

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

···
   compatible:
     enum:
       - qcom,sdm845-gpi-dma
+      - qcom,sm8150-gpi-dma
 
   reg:
     maxItems: 1

drivers/dma/qcom/gpi.c

···
 
 static const struct of_device_id gpi_of_match[] = {
 	{ .compatible = "qcom,sdm845-gpi-dma" },
+	{ .compatible = "qcom,sm8150-gpi-dma" },
 	{ },
 };
 MODULE_DEVICE_TABLE(of, gpi_of_match);