arm64: dts: qcom: msm8996: drop address/size cells from smd-edge

The smd-edge node does not have children with unit addresses:

  qcom/msm8996-oneplus3.dtb: remoteproc@9300000: smd-edge: '#address-cells', '#size-cells' do not match any of the regexes: 'pinctrl-[0-9]+'

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221124184333.133911-2-krzysztof.kozlowski@linaro.org