dt-bindings: qcom: qcom,geni-se: refer to dtschema for SPI

After adding DT schema for the SPI controller, the Qualcomm GENI Serial
Engine QUP Wrapper Controller bindings can reference it directly for
full schema validation.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Kuldeep Singh <singh.kuldeep87k@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220404064017.68634-2-krzysztof.kozlowski@linaro.org

Documentation/devicetree/bindings/soc/qcom/qcom,geni-se.yaml

@@ -103,27 +103,7 @@ patternProperties:
                  supports up to 50MHz, up to four chip selects, programmable
                  data path from 4 bits to 32 bits and numerous protocol
                  variants.
-    $ref: /schemas/spi/spi-controller.yaml#
-
-    properties:
-      compatible:
-        enum:
-          - qcom,geni-spi
-
-      interrupts:
-        maxItems: 1
-
-      "#address-cells":
-        const: 1
-
-      "#size-cells":
-        const: 0
-
-    required:
-      - compatible
-      - interrupts
-      - "#address-cells"
-      - "#size-cells"
+    $ref: /schemas/spi/qcom,spi-geni-qcom.yaml#
 
   "i2c@[0-9a-f]+$":
     type: object