ARM: dts: msm: Add dpdm regulator on kona

PM8150B charger requires a reference to USB PHY which exposes
a DPDM regulator to be enabled prior to performing charger type
detection. Using same reference usb driver checks for dpdm
regulator status before starting dwc3 state machine as it might
interfere with apsd (automatic power source detection).

Change-Id: I74e718dd649982a3992d711b98bb81a8caa74e27
Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>