arm64: dts: qcom: msm8916: improve usb hs node formating

qcom,init-seq registers are in pairs

Signed-off-by: David Heidelberg <david@ixit.cz>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20211229193731.72690-1-david@ixit.cz