dt-bindings: interconnect: Add EPSS L3 compatible for QCS8300 SoC

Add Epoch Subsystem (EPSS) L3 interconnect provider binding for
QCS8300 SoC. As the EPSS hardware in QCS8300 and SA8775P are same,
added a family-level compatible for SA877P SoC. This shared fallback
compatible allows grouping of SoCs with similar hardware, reducing
the need to explicitly list each variant in the driver match table.

Signed-off-by: Raviteja Laggyshetty <raviteja.laggyshetty@oss.qualcomm.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20250711102540.143-2-raviteja.laggyshetty@oss.qualcomm.com
Signed-off-by: Georgi Djakov <djakov@kernel.org>

Author: rlaggysh

Documentation/devicetree/bindings/interconnect/qcom,osm-l3.yaml

@@ -36,6 +36,11 @@ properties:
               - qcom,sm8350-epss-l3
               - qcom,sm8650-epss-l3
           - const: qcom,epss-l3
+      - items:
+          - enum:
+              - qcom,qcs8300-epss-l3
+          - const: qcom,sa8775p-epss-l3
+          - const: qcom,epss-l3
 
   reg:
     maxItems: 1