Revert "ARM: dts: msm: Disable usb pdphy on kona"

This reverts commit d6a8a58e.
Enables usb pd phy driver and policy engine. Sets pd phy phandle
for vbus and id extcon notifications.

Change-Id: I7d30f13d78a26697eb1a8f9ebef5ec482946e088
Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>