dt-bindings: arm: qcom: Add monaco-evk-ac support

Introduce bindings for the monaco-evk-ac IoT board, which is
based on the monaco-ac (QCS8300-AC) SoC variant.

Signed-off-by: Umang Chheda <umang.chheda@oss.qualcomm.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>

Author: umang-chheda

Documentation/devicetree/bindings/arm/qcom.yaml

@@ -877,6 +877,7 @@ properties:
       - items:
           - enum:
               - qcom,monaco-evk
+              - qcom,monaco-evk-ac
               - qcom,qcs8300-ride
           - const: qcom,qcs8300