dt-bindings: ufs: qcom: Add sm6115 binding

Add SM6115 UFS to DT schema.
Signed-off-by: Iskren Chernev <iskren.chernev@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Bhupesh Sharma <bhupesh.sharma@linaro.org>
Reviewed-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Iskren Chernev <me@iskren.info>
Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
Link: https://lore.kernel.org/r/20230814-dt-binding-ufs-v6-2-fd94845adeda@fairphone.comSigned-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/ufs/qcom,ufs.yaml

@@ -29,6 +29,7 @@ properties:
           - qcom,sa8775p-ufshc
           - qcom,sc8280xp-ufshc
           - qcom,sdm845-ufshc
+          - qcom,sm6115-ufshc
           - qcom,sm6350-ufshc
           - qcom,sm8150-ufshc
           - qcom,sm8250-ufshc
@@ -204,6 +205,35 @@ allOf:
         reg-names:
           maxItems: 1
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - qcom,sm6115-ufshc
+    then:
+      properties:
+        clocks:
+          minItems: 8
+          maxItems: 8
+        clock-names:
+          items:
+            - const: core_clk
+            - const: bus_aggr_clk
+            - const: iface_clk
+            - const: core_clk_unipro
+            - const: ref_clk
+            - const: tx_lane0_sync_clk
+            - const: rx_lane0_sync_clk
+            - const: ice_core_clk
+        reg:
+          minItems: 2
+          maxItems: 2
+        reg-names:
+          minItems: 2
+      required:
+        - reg-names
+
     # TODO: define clock bindings for qcom,msm8994-ufshc
 
   - if: