dt-bindings: hwlock: qcom: Remove invalid binding

The Qualcomm hwlock is described in DeviceTree either directly on the
mmio bus or split between a syscon and a mutex node, but as noted in
[1] the latter is not valid DT, so remove any traces of this from the
binding.

[1] https://lore.kernel.org/r/CAL_JsqLa9GBtbgN6aL7AQ=A6V-YRtPgYqh6XgM2kpx532+r4Gg@mail.gmail.com/

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20200729004757.1901107-1-bjorn.andersson@linaro.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

Documentation/devicetree/bindings/hwlock/qcom-hwspinlock.yaml

@@ -25,37 +25,14 @@ properties:
   '#hwlock-cells':
     const: 1
 
-  syscon:
-    $ref: "/schemas/types.yaml#/definitions/phandle-array"
-    description:
-      Should be a triple of phandle referencing the TCSR mutex syscon, offset
-      of first mutex within the syscon and stride between each mutex.
-
 required:
   - compatible
+  - reg
   - '#hwlock-cells'
 
-oneOf:
-  - required:
-    - reg
-  - required:
-    - syscon
-
 additionalProperties: false
 
 examples:
-  - |
-        tcsr_mutex_block: syscon@fd484000 {
-                compatible = "syscon";
-                reg = <0xfd484000 0x2000>;
-        };
-
-        hwlock {
-                compatible = "qcom,tcsr-mutex";
-                syscon = <&tcsr_mutex_block 0 0x80>;
-
-                #hwlock-cells = <1>;
-        };
   - |
         tcsr_mutex: hwlock@1f40000 {
                 compatible = "qcom,tcsr-mutex";