dt-bindings: interconnect: Convert snoc-mm to a sub-node of snoc

snoc and snoc-mm in downstream use the same address space a mistake which
we have carried over into upstream. In silicon terms snoc-mm has been
tacked on to the original snoc which came from msm8916.

Convert to a better description where snoc-mm is a sub-node of snoc, thus
avoiding a mmio remap collision when using the RPM interconnect driver.

Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220129032735.2410936-2-bryan.odonoghue@linaro.orgSigned-off-by: Georgi Djakov <djakov@kernel.org>

Documentation/devicetree/bindings/interconnect/qcom,rpm.yaml

@@ -26,7 +26,6 @@ properties:
       - qcom,msm8939-bimc
       - qcom,msm8939-pcnoc
       - qcom,msm8939-snoc
-      - qcom,msm8939-snoc-mm
       - qcom,msm8996-a0noc
       - qcom,msm8996-a1noc
       - qcom,msm8996-a2noc
@@ -80,7 +79,6 @@ allOf:
               - qcom,msm8939-bimc
               - qcom,msm8939-pcnoc
               - qcom,msm8939-snoc
-              - qcom,msm8939-snoc-mm
               - qcom,msm8996-a1noc
               - qcom,msm8996-a2noc
               - qcom,msm8996-bimc
@@ -107,6 +105,37 @@ allOf:
               - description: Bus Clock
               - description: Bus A Clock
 
+        # Child node's properties
+        patternProperties:
+          '^interconnect-[a-z0-9]+$':
+            type: object
+            description:
+              snoc-mm is a child of snoc, sharing snoc's register address space.
+
+            properties:
+              compatible:
+                enum:
+                  - qcom,msm8939-snoc-mm
+
+              '#interconnect-cells':
+                const: 1
+
+              clock-names:
+                items:
+                  - const: bus
+                  - const: bus_a
+
+              clocks:
+                items:
+                  - description: Bus Clock
+                  - description: Bus A Clock
+
+            required:
+              - compatible
+              - '#interconnect-cells'
+              - clock-names
+              - clocks
+
   - if:
       properties:
         compatible: