usb: pd: add snapshot of qpnp-pdphy and policy_engine drivers

The qpnp-pdphy driver provides support for the PD PHY peripheral
found on Qualcomm Technologies, Inc. PMICs. This along with
the policy engine provides a protocol stack that supports
USB Power Delivery communication over a Type-C port.

This snapshot is taken as of msm-4.4
commit 312981bf914f ("ARM: dts: msm: Add sdhc ice device node for
sdm660").

Change-Id: I0a34076dee8476494dfccfe6fc807247caab8927
Signed-off-by: Jack Pham <jackp@codeaurora.org>
9 files changed