dt-bindings: arm: qcom: document AL02-C8 board based on IPQ9574 family

Document AL02-C8 (Reference Design Platform 453) board based on IPQ9574
family of SoCs.
Signed-off-by: Devi Priya <quic_devipriy@quicinc.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230526153152.777-2-quic_devipriy@quicinc.com

Documentation/devicetree/bindings/arm/qcom.yaml

@@ -89,6 +89,7 @@ description: |
         ap-al02-c2
         ap-al02-c6
         ap-al02-c7
+        ap-al02-c8
         ap-mi01.2
         ap-mi01.6
         cdp
@@ -357,6 +358,7 @@ properties:
               - qcom,ipq9574-ap-al02-c2
               - qcom,ipq9574-ap-al02-c6
               - qcom,ipq9574-ap-al02-c7
+              - qcom,ipq9574-ap-al02-c8
           - const: qcom,ipq9574
 
       - description: Sierra Wireless MangOH Green with WP8548 Module