USB: fix fsl_otg config dependency

USB_GADGET_FSL_USB2 has been changed to USB_FSL_USB2 by commit
193ab2a6 (usb: gadget: allow
multiple gadgets to be built). But old USB_GADGET_FSL_USB2 is
still listed as dependency for fsl_otg driver, so the driver
cannot be selected in the configuration currently. Fix it.
Signed-off-by: NAnatolij Gustschin <agust@denx.de>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

drivers/usb/otg/Kconfig

@@ -110,7 +110,7 @@ config AB8500_USB
 
 config FSL_USB2_OTG
 	bool "Freescale USB OTG Transceiver Driver"
-	depends on USB_EHCI_FSL && USB_GADGET_FSL_USB2 && USB_SUSPEND
+	depends on USB_EHCI_FSL && USB_FSL_USB2 && USB_SUSPEND
 	select USB_OTG
 	select USB_OTG_UTILS
 	help