dt-bindings: phy: Add eDP PHY compatible for QCS8300

Add compatible string for the supported eDP PHY on QCS8300 platform.
QCS8300 have the same eDP PHY with SA8775P.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Yongxing Mou <quic_yongmou@quicinc.com>
Link: https://lore.kernel.org/r/20250730072725.1433360-1-quic_yongmou@quicinc.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

Author: Yongxing Mou

Documentation/devicetree/bindings/phy/qcom,edp-phy.yaml

@@ -16,13 +16,18 @@ description:
 
 properties:
   compatible:
-    enum:
-      - qcom,sa8775p-edp-phy
-      - qcom,sc7280-edp-phy
-      - qcom,sc8180x-edp-phy
-      - qcom,sc8280xp-dp-phy
-      - qcom,sc8280xp-edp-phy
-      - qcom,x1e80100-dp-phy
+    oneOf:
+      - enum:
+          - qcom,sa8775p-edp-phy
+          - qcom,sc7280-edp-phy
+          - qcom,sc8180x-edp-phy
+          - qcom,sc8280xp-dp-phy
+          - qcom,sc8280xp-edp-phy
+          - qcom,x1e80100-dp-phy
+      - items:
+          - enum:
+              - qcom,qcs8300-edp-phy
+          - const: qcom,sa8775p-edp-phy
 
   reg:
     items: