dt-bindings: display/msm/gmu: Add Adreno X185 GMU

Document Adreno X185 GMU in the dt-binding specification.
Signed-off-by: Akhil P Oommen <quic_akhilpo@quicinc.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Patchwork: https://patchwork.freedesktop.org/patch/601395/Signed-off-by: Rob Clark <robdclark@chromium.org>

Documentation/devicetree/bindings/display/msm/gmu.yaml

@@ -23,6 +23,9 @@ properties:
       - items:
           - pattern: '^qcom,adreno-gmu-[67][0-9][0-9]\.[0-9]$'
           - const: qcom,adreno-gmu
+      - items:
+          - pattern: '^qcom,adreno-gmu-x[1-9][0-9][0-9]\.[0-9]$'
+          - const: qcom,adreno-gmu
       - const: qcom,adreno-gmu-wrapper
 
   reg:
@@ -225,6 +228,7 @@ allOf:
               - qcom,adreno-gmu-730.1
               - qcom,adreno-gmu-740.1
               - qcom,adreno-gmu-750.1
+              - qcom,adreno-gmu-x185.1
     then:
       properties:
         reg: