ARM: dts: msm: Add USB support in dtsi files for msm8936 bringup

Add device tree entries for USB OTG device to operate in
peripheral mode, add handle to pmic regulators node, add
phy type, add otg-control as phy control. Add android usb
device node

Change-Id: Ie52535524f0d12bd7f7de40ee82d2c03c0cac094
Signed-off-by: Vijayavardhan Vennapusa <vvreddy@codeaurora.org>