usb: phy: otg-fsm: export symbol of otg_statemachine

This patch exports symbol of otg_statemachine for kernel module
can use it.
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Li Jun <b47624@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/phy/phy-fsm-usb.c

@@ -363,3 +363,4 @@ int otg_statemachine(struct otg_fsm *fsm)
 	VDBG("quit statemachine, changed = %d\n", state_changed);
 	return state_changed;
 }
+EXPORT_SYMBOL_GPL(otg_statemachine);