arm64: dts: qcom: c630: add second channel for wifi

On the Lenovo Yoga C630, the WiFi/BT chip can use both RF
channels/antennas, so add the regulator for it.

Signed-off-by: Steev Klimaszewski <steev@kali.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210914181603.32708-1-steev@kali.org