dt-bindings: remoteproc: qcom,glink-edge: add GPR node

The existing SM8450 DTS (and newer platforms) come with a "gpr" child node,
not "apr":

  sm8450-sony-xperia-nagara-pdx224.dtb: remoteproc@30000000: glink-edge: Unevaluated properties are not allowed ('gpr' was unexpected)
    From schema: Documentation/devicetree/bindings/remoteproc/qcom,sm8350-pas.yaml
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221223132213.81273-1-krzysztof.kozlowski@linaro.org

Documentation/devicetree/bindings/remoteproc/qcom,glink-edge.yaml

@@ -22,7 +22,7 @@ properties:
     required:
       - qcom,glink-channels
     description:
-      Qualcomm APR/GPR (Asynchronous/Generic Packet Router)
+      Qualcomm APR (Asynchronous Packet Router)
 
   fastrpc:
     $ref: /schemas/misc/qcom,fastrpc.yaml#
@@ -31,6 +31,13 @@ properties:
     description:
       Qualcomm FastRPC
 
+  gpr:
+    $ref: /schemas/soc/qcom/qcom,apr.yaml#
+    required:
+      - qcom,glink-channels
+    description:
+      Qualcomm GPR (Generic Packet Router)
+
   interrupts:
     maxItems: 1
 
@@ -52,6 +59,21 @@ required:
   - mboxes
   - qcom,remote-pid
 
+allOf:
+  - if:
+      required:
+        - apr
+    then:
+      properties:
+        gpr: false
+
+  - if:
+      required:
+        - gpr
+    then:
+      properties:
+        apr: false
+
 additionalProperties: false
 
 examples: