Add compatible string for the DisplayPort controller found on the
Qualcomm QCS8300 SoC.

The Qualcomm QCS8300 platform comes with one DisplayPort controller
that supports 4 MST streams, similar to the one found on the SA8775P.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Yongxing Mou <yongxing.mou@oss.qualcomm.com>
---
 Documentation/devicetree/bindings/display/msm/dp-controller.yaml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/msm/dp-controller.yaml b/Documentation/devicetree/bindings/display/msm/dp-controller.yaml
index aeb4e4f36044..ea88e1903f26 100644
--- a/Documentation/devicetree/bindings/display/msm/dp-controller.yaml
+++ b/Documentation/devicetree/bindings/display/msm/dp-controller.yaml
@@ -31,6 +31,11 @@ properties:
           - qcom,sm8650-dp
           - qcom,x1e80100-dp
 
+      - items:
+          - enum:
+              - qcom,qcs8300-dp
+          - const: qcom,sa8775p-dp
+
       - items:
           - enum:
               - qcom,sm6350-dp

-- 
2.43.0