arm64: dts: qcom: sm8250-xiaomi-elish: set pm8150b_vbus regulator-min-microamp and regulator-max-microamp

Fix the dtb check warnings:
  sm8250-xiaomi-elish-boe.dtb: usb-vbus-regulator@1100: 'regulator-min-microamp' is a required property
  sm8250-xiaomi-elish-boe.dtb: usb-vbus-regulator@1100: 'regulator-max-microamp' is a required property

Fixes: 69652787 ("arm64: dts: qcom: sm8250-xiaomi-elish: Add pm8150b type-c node and enable usb otg")
Signed-off-by: Jianhua Lu <lujianhua000@gmail.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20240323100443.2478-1-lujianhua000@gmail.comSigned-off-by: Bjorn Andersson <andersson@kernel.org>