dt-bindings: arm: qcom: Add Fxtec Pro1X

Document F(x)tec Pro1X as a SM6115 device.
Signed-off-by: Dang Huynh <danct12@riseup.net>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230505-fxtec-pro1x-support-v3-1-0c9c7f58b205@riseup.net

Documentation/devicetree/bindings/arm/qcom.yaml

@@ -882,6 +882,11 @@ properties:
           - const: qcom,qrb4210
           - const: qcom,sm4250
 
+      - items:
+          - enum:
+              - fxtec,pro1x
+          - const: qcom,sm6115
+
       - items:
           - enum:
               - lenovo,j606f