dt-bindings: arm: msm: kpss-acc: Revert "dt-bindings: arm: msm: kpss-acc: Make the optional reg truly optional"

This reverts commit 981be23 because it
was totally bogus and duplicated existing minItems:

  ruamel.yaml.constructor.DuplicateKeyError: while constructing a mapping
  Documentation/devicetree/bindings/power/qcom,kpss-acc-v2.yaml: ignoring, error parsing file

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20230724090109.19489-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

Author: krzk

Documentation/devicetree/bindings/power/qcom,kpss-acc-v2.yaml

@@ -21,7 +21,6 @@ properties:
     const: qcom,kpss-acc-v2
 
   reg:
-    minItems: 1
     items:
       - description: Base address and size of the register region
       - description: Optional base address and size of the alias register region