arm64: dts: qcom: msm8996: fix APR services nodes

DT schema expects APR services node names to be "service" and to have an
unit address (as it has a "reg" property):

  qcom/msm8996-xiaomi-gemini.dtb: apr: 'power-domains', 'q6adm', 'q6afe', 'q6asm', 'qcom,smd-channels' do not match any of the regexes: '^service@[1-9a-d]$', 'pinctrl-[0-9]+'

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20220910091428.50418-5-krzysztof.kozlowski@linaro.org