le is connected.

During unload of the gadget driver:Call pm_runtime_get_sync if cable/device
is not connected.
End of the gadget driver unload : pm_runtime_put

During unload of musb driver : Call pm_runtime_get_sync
End of unload: Call pm_runtime_put

On connect of usb cable/device -> transceiver notification(VBUS and ID-GND):
pm_runtime_get_sync only if the gadget driver loaded.

On disconnect of the cable/device -> Disconnect Notification:
pm_runtime_put if the gadget driver is loaded.

Signed-off-by: Hema HK <hemahk@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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