arm64: dts: qcom: x1e80100-dell-xps-9345: Add WiFi/BT pwrseq

arm64: dts: qcom: x1e80100-dell-xps-9345: Add WiFi/BT pwrseq

Add the WiFi/BT nodes for XPS and describe the regulators for the WCN7850
combo chip using the new power sequencing bindings. All voltages are
derived from chained fixed regulators controlled using a single GPIO.

Based on the commit d09ab685a8f5 ("arm64: dts: qcom: x1e80100-qcp: Add
WiFi/BT pwrseq").

Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: Aleksandrs Vinarskis <alex.vinarskis@gmail.com>
Tested-by: Laurentiu Tudor <laurentiu.tudor1@dell.com>
Link: https://lore.kernel.org/r/20250331204610.526672-2-alex.vinarskis@gmail.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>