spi: dt-bindings: qcom,spi-geni-qcom: allow three interconnects

Recent Qualcomm Geni SPI nodes, e.g. on SM8450, come also with three
interconnects.  This fixes dtbs_check warnings like:

  sm8450-qrd.dtb: spi@a98000: interconnects: [[46, 1, 0, 46, 4, 0], [47, 2, 0, 48, 12, 0], [49, 1, 0, 50, 1, 0]] is too long
  sm8450-qrd.dtb: spi@a98000: interconnect-names: ['qup-core', 'qup-config', 'qup-memory'] is too long

Fixes: 5bdcae1f ("spi: dt-bindings: qcom,spi-geni-qcom: convert to dtschema")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220720163841.7283-1-krzysztof.kozlowski@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/spi/qcom,spi-geni-qcom.yaml

@@ -45,12 +45,15 @@ properties:
       - const: rx
 
   interconnects:
-    maxItems: 2
+    minItems: 2
+    maxItems: 3
 
   interconnect-names:
+    minItems: 2
     items:
       - const: qup-core
       - const: qup-config
+      - const: qup-memory
 
   interrupts:
     maxItems: 1