ENGR00251209-6 msl-mx6: usb: keep the phy lower flag as true defaultly

ENGR00251209-6 msl-mx6: usb: keep the phy lower flag as true defaultly

Keep the phy lower flag as true defaultly, the driver should mark
it as false when the driver begins to use PHY.
This fixes one bug that when build both host and gadget as loadable
modules, the phy lower flag is false if the related module is not
loaded, then, the wakeup interrupt will not be treated as happened
if host module is loaded, but gadget is not loaded, or vice verse.

Signed-off-by: Peter Chen <peter.chen@freescale.com>