ARM: dts: msm: Add secondary USB configuration for kona

Add support for second USB controller and PHYs on kona. Add
nodes for GPIO based extcon on CDP and MTP which is used to
notify cable connection status via VBUS and ID pins. Also use
secondary phandles for regulators which match the naming scheme
used in the power grid hardware documentation.

Change-Id: I353671184302c0b806ba3ac7df6b05b83f364674
Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>